Pregnant??? Please help.

So my and my boyfriend are sexually active and sometimes we’ve used condoms sometimes we have not. He has NEVER came inside of me or had to pull out because he came. He always stops when he feels it coming that way it’s less scary for the both of us. I took a Plan B the first time we had unprotected sex the day after, and then other times it’s only been a few thrusts and then we put a condom on because we realized it was too dangerous. Sometimes he pulls out every once in a while to wipe precum off and we’ve never had sex after he already came and he peed so the sperm would’ve been flushed out. I was supposed to start my period 4 days ago and i’m craving my usual period cravings and having PMS symptoms but i’m scared that they’re pregnancy symptoms instead?? I took a pregnancy test when i was 2 days late and it was negative. i have been really stressed out lately so maybe that can be the reason but i’m just really stressing right now. Also please no hate because all i’m trying to do is get some advice and help on what could be happening.