Mama just did a quick google about pcos and climid:
"Sometimes, ultrasound will show the follicles growing in response to Clomid, but the midcycle LH surge isn't strong enough to bring on ovulation. In this case, your doctor may prescribe Clomid along with an injection of hCG, like the drug Ovidrel, to trigger ovulation and boost the midcycle LH surge.
If after trying these options, you're still not ovulating on Clomid, your doctor may suggest trying different ovarian stimulating medications. Hopeful studies are emerging about the medication Letrozole, also known as Femara. Studies have shown that Letrozole may induce ovulation in some women with PCOS who do not respond to Clomid, as well as some women with unexplained infertility and Clomid resistance.
In one study, women with Clomid resistance and PCOS were more likely to ovulate when taking the medication Letrozole (79.3% ovulated), than when taking Clomid in combination with two, low dose injections of FSH therapy (56.59% ovulated). Pregnancy rates were also improved, with 23% of the women taking Letrozole achieving pregnancy, and 14% achieving pregnancy with the Clomid and two-injections of low-dose FSH combination."
Maybe a way forward this way? A mid cycle ultrasound sounds like a good idea to see if you are ovulating anyway."
Also not sure what your clomid dosage is but found this too:
"Sometimes, the reason you may not ovulate on Clomid is because the dosage is too low. It's common to start Clomid treatment at 50 mg, and then increase to 100 mg if you don't respond to 50 mg. In some cases, doctors will try doses up to 250 mg. "
I'm sure you know all this but thought i'd post it anyway just in case