Unprotected ex sex

Not here for anyone wanting to judge or put me down for my decisions, I'm honestly worried and would just like some input. So my ex and I still hook up every now and then but the last time we didn't have a condom and he finished in me about 2 weeks before my period was due, and then 8 days later I started bleeding, not heavy, and it lasted for 3 days and I took a test after and it came back negative. My period never showed after that and I was due for my next period yesterday but nothing. What do you guys think? Could I be pregnant? Nothing crazy as far as symptoms, fatigue, bloating, frequent urination, and higher appetite. Thank you in advance!