Am I Pregnant?

I’m sorry if this is TMI for some of you but I’m just a little worried. After sex today with my boyfriend I splattered blood all over my sheets that was a brownish light pink color. (This has never ever happened to me before). I shouldn’t have my period for another 12 days. The last 2 days my boobs have been killing me and last night I was cramping. 2 days ago was my ovulation predicted. Is there a change I could have have implantation bleeding after having sex 2 days ago when I ovulated? All the input is appreciated thank you all ☺️