Anovulation infertility, first round of Clomid

Story: Progesterone level on CD21 was 0.15 and obgyn told me I don’t ovulate. Did HSG on CD10- tubes weren’t clogged, uterus looked good, and didn’t find any abnormalities. Obgyn started me on my first round of Clomid (50mg) to take on CD5-9. I am now on CD14, still not ovulating based on many OPK. Had my ultrasound for CD12, was also told there were no abnormalities and I had growing follicles on both ovaries. DH and I are having intercourse as recommended by Obgyn and now I’m feeling dispirited every time I look at the OPK with negative LH surge.

Question: For those who are on similar terms, how long did it take you to ovulate on Clomid? Have anyone gone to do a second opinion by another Obgyn or a reproductive endocrinologist? I’ve been thinking of getting a second opinion by a specialist just to make sure I don’t have PCOS or endometriosis.

Thank you!