OPK kits can sometimes miss a surge. On the other hand, not everyone with PCOS responds to the initial starting dose of clomid. If you are only day 18, I would suggest:
1) Continue to test with OPKs for another 2-3 days
2) If no surge is detected, have a blood test for a hormone called progesterone on day 25.
3) If your progesterone level on day 25 is more than 3, this means that you ovulated (which might account for the cramps) but the OPK missed detecting the surge.
4) If your progesterone is less than 3, it means that you did not ovulate. In this instance, your doctor should prescribe provera 10 mg for 7 days to bring on a period, and then increase the dose of clomid next month to 100 mg from days 5-9 and repeat the process.
About 30%-40% of women with PCOS are resistant to ovulating with clomid, even at the highest dose (we will go as high as 200 mg for 5 dyas). Strategies if you are not ovulating on clomid include adding an antidiabetes medicine called metformin, trying another pill called letrozole, or trying fertility injection medicines. Whereas clomid is only 60%-70% effective, the injection medicines almost always lead to ovulation. The tradeoff is that the injections are more expensive, carry a higher risk of multiples, require an injection. Thus, we always try to see if the fertility pills, like clomid, can do the job first.
I would also recommend not taking BBTs. They will not help - even with women who clearly ovulate based on BBTs, by the time they know for sure that they have ovulated, it is past the time where the egg is capable of being fertilized by the sperm.
Hope this helps.
I can sympathize with all of you. The worst part is not knowing if there is something else wrong. I know I need to be patient but will the femara work to induce ovulation? If so when????
Any advice or info would be greatly appreciated.