help!!!

so about last week my boyfriend and I tried having sex. he basically just went in and came right out (no condom) it was quick asf and we were careful about him not cumming. my period is late but it's irregular all the time anyway. after doing it he was worried so I took plan b a day later. I think that's affecting my cycle as well. yesterday he gave me a hard fingering and I am now getting brown discharge is this normal?