Hey! Just wondering other people’s experiences.. (sorry it may be a long one)

My last period started 22/05/18.. only lasted 4 days rather than my normal 6/7.. we dtd a week or so before that and ever since like literally every day I’m having pms symptoms, subtle cramps, nausea, tiredness, boobs are aching, I’ve already missed two periods and I’m usually like clock work. I can occasionally be late by 2-3 days if I am stressed but nothing more. Taken a few tests, all negative. Had blood tests done and get the results tomorrow. Has this happened to anyone else before and they ended up pregnant?