Unsure

My husband and I have been trying to conceive for 6 months. Last month went in for having a lot of pain in ovaries. Doctor thought it could be PCOS:/ she encouraged that we start by doing ovulation test to make sure I was even having one! Long story short found out that it was coming earlier than the app was predicting! Great right? had sex during ovulation and am 7 days late for af!!! But test came back with a BFN:(..don't know what to think anymore:/