symptoms

Maria

hi so my husband and I are ttc and we had BD on Sunday and it is now Thursday and my boobs hurt I have pain/cramp in my left side of my pelvic area and I am not supposed to start my period for at least another week and a half. I don't want to get my hopes up but is there a chance that it could be implantation symptoms and that it could be possible that it will lead to me being pregnant or is it just all in my head. please give your advice ladies.