Confused! Help!

I’m 29, engaged, with 2 kiddos already that are 9&5. I’ve been on this pill for like 2 years, one of the mini pills. I stopped taking it June 25th because we decided to TTC baby #3. This pill only gave me a period once every 3-4 months. I haven’t gotten a period since May. I took an ovulation test on July 9th and it was positive. BD the 2 days before that day, that day, and 2 days after. I feel pregnant but the tests are negative. Could I be pregnant or do I have to wait to have a period and try again? I’m confused!