Getting a Clomid prescription starts with a fertility evaluation from your OB/GYN or a reproductive endocrinologist. Most doctors won’t prescribe it based on a single conversation. They’ll need to confirm that you have an ovulation problem, rule out other causes of infertility, and make sure the medication is safe for you. The whole process, from first appointment to first pill, typically takes a few weeks to a couple of months depending on how quickly testing gets scheduled.
Who Can Prescribe Clomid
Your regular OB/GYN can prescribe Clomid. You don’t necessarily need a fertility specialist, though some OB/GYNs prefer to refer patients to a reproductive endocrinologist (RE) for ovulation induction. If you’ve been trying to conceive for 12 months without success (or 6 months if you’re over 35), most OB/GYNs will begin a workup that could lead to a Clomid prescription. If your cycles are clearly irregular or absent, many will start that conversation sooner.
Reproductive endocrinologists are the specialists most experienced with Clomid and tend to do more thorough monitoring during treatment. If your OB/GYN prescribes it but you don’t respond after a few cycles, you’ll likely be referred to an RE for next steps.
Tests You’ll Need First
Doctors don’t prescribe Clomid blindly. Before writing the prescription, they need to figure out why you’re not getting pregnant and confirm that the medication makes sense for your situation. Diagnostic testing should be completed beforehand to rule out other fertility factors that Clomid can’t fix.
The standard workup typically includes:
- Blood work for hormone levels. This usually covers follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol, thyroid function, and prolactin. These results tell your doctor whether the problem is ovulation-related and help rule out conditions like premature ovarian insufficiency or thyroid disorders.
- A semen analysis for your partner. There’s no point stimulating ovulation if a sperm issue is the primary barrier. This is one of the first tests ordered in any fertility workup.
- A hysterosalpingogram (HSG). This is an X-ray procedure that checks whether your fallopian tubes are open. Blocked tubes mean the egg and sperm can’t meet, so Clomid alone wouldn’t help.
- A pelvic ultrasound. This checks the ovaries and uterus for cysts, fibroids, or structural issues that could affect treatment.
If all of these come back without red flags and you have confirmed ovulatory dysfunction, or if you fall into the “unexplained infertility” category, Clomid is one of the first treatments doctors reach for.
Conditions That Qualify You for Treatment
Clomid works by triggering ovulation, so the primary candidates are women who aren’t ovulating regularly or at all. Polycystic ovary syndrome (PCOS) is the most common diagnosis that leads to a Clomid prescription. Women with PCOS often have irregular or missing periods because their bodies don’t release eggs on a predictable schedule. Clomid pushes the brain to send stronger signals to the ovaries, prompting follicle growth and egg release.
Beyond PCOS, doctors also prescribe Clomid for other forms of ovulatory dysfunction and for unexplained infertility, where all tests come back normal but pregnancy hasn’t happened. In unexplained cases, the idea is that stimulating ovulation may improve egg quality or timing even when nothing obvious is wrong.
Clomid is also used off-label for men with low testosterone or male-factor infertility. Rather than replacing testosterone directly (which can shut down sperm production), Clomid stimulates the body’s own hormone production. A urologist or endocrinologist typically handles this, and it requires its own set of blood work to confirm low hormone levels.
What Happens at Your Appointment
If your test results point toward ovulatory dysfunction or unexplained infertility, your doctor will discuss starting Clomid. The standard starting dose is 50 mg per day for five days, usually beginning on day 3, 4, or 5 of your menstrual cycle. If you don’t have regular periods, your doctor may use a short course of progesterone to trigger a withdrawal bleed so you have a “day 1” to count from.
Your doctor will explain the timing for intercourse or intrauterine insemination (IUI) relative to your expected ovulation window. Many practices pair Clomid with timed intercourse for the first cycle or two before adding IUI if needed.
Monitoring During Your Cycle
Clinical guidelines recommend an ultrasound during your first Clomid cycle to check how many follicles are developing. The goal is one or two mature follicles. If too many develop, the risk of twins or higher-order multiples goes up significantly, and your doctor may cancel the cycle or advise against intercourse.
In practice, monitoring varies. A national survey of clinicians in the UK found that about 51% were not consistently using ultrasound during first-cycle Clomid treatment, and nearly 22% never did. Some OB/GYNs prescribe Clomid without cycle monitoring, relying instead on ovulation predictor kits and follow-up blood work to confirm ovulation occurred. Reproductive endocrinologists are more likely to include ultrasound tracking. If you want that level of oversight, ask about it upfront or consider seeing a fertility clinic rather than a general gynecologist.
Success Rates Per Cycle
Clomid is effective at triggering ovulation in about 70 to 80% of women with ovulatory disorders. But ovulation doesn’t guarantee pregnancy. Clinical pregnancy rates per cycle are more modest. For women with PCOS, pregnancy rates run around 12 to 17% per cycle. For unexplained infertility, rates range from about 15 to 24% per cycle depending on the protocol.
Those numbers might sound low for a single cycle, but they’re cumulative. Over three to six cycles, a meaningful percentage of women will conceive. Most doctors recommend trying for three to six cycles before moving on to other options.
When Clomid Isn’t an Option
Certain conditions rule out Clomid. Your doctor won’t prescribe it if you have liver disease, undiagnosed abnormal uterine bleeding, ovarian cysts (other than those from PCOS), or if you’re already pregnant. High baseline FSH levels, which suggest diminished ovarian reserve, also make Clomid a poor fit because the ovaries are unlikely to respond.
If you have blocked fallopian tubes, Clomid won’t help on its own since the egg has no path to reach the sperm. And if your partner’s semen analysis shows severe male-factor infertility, ovulation induction alone won’t be enough.
If Clomid Doesn’t Work
If you don’t ovulate on 50 mg, your doctor will typically increase the dose to 100 mg for the next cycle. Most protocols cap at 150 mg per day, and doctors generally don’t continue beyond six ovulatory cycles if pregnancy hasn’t occurred. At that point, the most common next steps are switching to letrozole (which works through a different mechanism and is now preferred as a first-line treatment for PCOS in many guidelines), adding injectable hormones, or moving to IVF.
If you ovulate on Clomid but still aren’t getting pregnant after three to four cycles, your doctor may add IUI to improve the odds, or recommend further testing to look for subtler issues that initial screening may have missed.
Getting Started: A Practical Timeline
If you’re starting from scratch with no prior fertility workup, here’s a realistic timeline. At your first appointment, your doctor orders blood work and schedules a semen analysis for your partner. That blood work may need to happen on specific cycle days (day 3 for most hormone panels), so there can be a short wait. An HSG is typically scheduled in the first half of your cycle, often within a few weeks. Once results are in, your doctor reviews everything and, if Clomid is appropriate, writes the prescription to start with your next period.
From first appointment to first Clomid cycle, expect roughly four to eight weeks. If your periods are irregular, it may take slightly longer since some tests are cycle-dependent. The medication itself is inexpensive, often under $30 per cycle without insurance, which is one reason it remains a common first-line fertility treatment.