With that said, the standard Clomid cycle length is about four weeks. In the first week, you take a total of 350 milligrams or one Clomid 50 mg daily. The same goes for the second week. Clomid side effects are mild for most people. The most common ones include hot flashes, headaches, bloating, mood swings, and breast tenderness. Once ovulation occurs, the length of the second half of the cycle, the luteal phase, is fairly fixed at around 14 days. Therefore, in a regular cycle, ovulation can be predicted as occurring 14 days prior to the first day of the next due period. For the last few cycles, I have been having medicated IUI, but on CD2 this cycle, I had a scan and was told not to take Clomid this cycle. Anyway, we went ahead with a natural IUI cycle instead, and I was scanned every other day up until the insemination. I am not sure what is going on with you specifically, but I can explain that clomid can change the length of your cycle by delaying your ovulation and thus the time in which your pregnancy test will be positive can be delayed by 4-7 days or your period as well. Enter the first day of your last period and the menstrual cycle length to calculate the most fertile days of your cycle. If your cycles are irregular, please contact us for evaluation and calculation of your most fertile days. average length to get pregnant on clomid, buy. length to get pregnant on clomid how long does it. day cycle clomid and post cycle. How Long Does It Take For Clomid To Work - cbycox.com. Only 0.47 per pill. Clomid is easy to take and is given in pill form for 5 days, usually beginning on day 3 to 5 of the menstrual cycle. Clomid is typically used today for women with irregular periods or polycystic ovarian syndrome ( PCOS ) who desire to become pregnant. hi barbarella, thanks a million for your reply! i’m so sorry to hear about your miscarriage. this is my 3rd cycle of clomid, on my previous 2 cycles i took 50mg and this is my first 100mg cycle. i seem to have ov’d around day 17 in my last couple of cycles. Your menstrual cycle might be regular — about the same length every month — or somewhat irregular, and your period might be light or heavy, painful or pain-free, long or short, and still be considered normal. Within a broad range, normal is what's normal for you.