Cycle day 37... negative tests???

I have taken about 4 tests within the last week and a half because I just feel like something is off about my body. Just sitting here right now I feel nauseous. If i am pregnant, this would be my first so I wouldn't even know what to be looking for except textbook symptoms. I am currently 5 days late on my period. Which is absolutely never late, unless the cycle switches, which it did last month, meaning I had my period for may on the 9th-14th, then got another period june 1st-5th. I had unprotected sex on june 11-25 sometimes he pulled out sometimes not. I've been unbearably tired the last couple of weeks, weird food cravings, then on the 24th I had these horrible cramps with light spotting. The only thing I'm not having that is common is breast pain, which i ALWAYS get with my period and I'm not having it right now. Also, I had unprotected sex throughout the weekend but I'm sure I can't get pregnant then because it's too close to my period. Any advice or stories similar to me??? When did you get your BFP?