My bf and i we have unprotected sex all the time and last month we have gone a bit crazy with sex and he’s not pulled out a couple of times so i had a plan b but then the next day he did it again and i told him im not taking another plan b and this happened on the last day of my period. On the 18 i was bleeding for three day but little bit of blood so a couple of weeks i have been super nauseous and didn’t want to eat anything now im doing better and im four days late from my period but i had just taken a pregnancy test and it’s negative so i don’t know