Could I be pregnant?

Hey everyone! So in March I stopped taking my bc pills. I got my period March 27-31. After that me and my boyfriend were having unprotected sex and he was ejaculating in me. I still have yet to get my period but I have been having a lot of pregnancy symptoms. My breast have been extremely sore, I have food cravings, certain food smells make me really nauseous, bad cramps and I've been extremely moody. Also over the weekend I had really light pink discharge, could be implantation bleeding?