Unprotected sex & need advice

Rachel • Just a young lady tracking her flow and avoiding pregnancy during college.
I've gotten my period on March 30- April 1, however I had unprotected sex on the 31st with my partner thinking it'll make the flow easier but it never came back. On May 24 I had unprotected sex with my partner. On May 27 around 9:30 pm, I had a huge spot, thinking I was getting my period, put on a pad, with a fever and chills so  I slept. Following day I checked and I had no spots or blood. On June 4-5 I saw my partner and had unprotected sex again. Is this normal to not get my period? He does not finish inside me, pulls out right when he is about to finish. I don't think I'm  pregnant and I should be fine right?