Pregnancy?

Okay so me and my bf tried to conceive on March 21st (now April 16th) soo In that week of March he ejaculated in me like 6 times (different days) and I waited two weeks to take a test because I was impatient lol and it came out negative.... so I was going to wait 2 more weeks, but I ended up having my period, which was a normal flow for me... so I stopped thinking about being pregnant after I had my period... I had my period on April 6th and ended on the 12th... so on this Saturday that passed on the 14th I was nauseous a bit and my stomach hurt like if I had gas, but I didn’t have gas, and I was hungrier than usual... I also had cramps which I found weird because I had ended my period already... my breasts aren’t sore as much but it does comes and goes... and today my stomach hurt again but it hurt more than usual, and I got really bloated, that I had to unbutton my pants... also, I’m sore from my lower stomach, where the cramps happens , if I bend a certain way or pick up something heavy, it feels really sore... my question is... is it still possible to be pregnant? Or am I just overthinking??? Because i don’t feel myself at all