Last cycle was March 28

That makes me 35 days late! I randomly checked for pregnancy and ovulation. HPTS have been negative. And on May 28 I had a positive ovulation test. Keep in mind I've not had AF since March! I have no signs of AF at all. Have a few pregnancy symptoms. Such as cranky, frequent bathroom trips, heartburn, and no matter how much sleep I get I still fall asleep throughout the day. Anybody else had this happen to them? I don't know what's going on?