Period late

Ty

My period is 30 days late and I’ve been having unprotected sex, last time I had a period was feb 9-14 and haven’t got one since then, I’ve been having cramps like ones finna start but it doesn’t .. one day when I wipe it was light brown blood when I wipe and nothing since.. I’ve taken 3 test and all negative. Lol I guess ima just gonna continue to wait it out