Am I pregnant or did I even ovulate?

Okay so here's the thing I have usually been <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> scheduling baby making time and everything in between with no luck the doctor gave me until September to get pregnant and if not I would have to go on birth control for 3 months then be taken off and put on clomid(I have Endometriosis and PCOS) so the DH and I decided to stop tracking and testing and just throw it to the wind with if it happened it happened and now I am 3-4 days late for my AF and I have some pressure across my pelvic area. Woke up this morning a little nausea and felt like my sugar was a little off(I'm not diabetic) I definitely want to be pregnant but I'm not sure if I am or not. I have taken pregnancy tests and all are negative.( my mother had negatives with 2 of her 3 children me included) any input would be helpful!