stressing!!!!!

My bf and i had sex march 31 (protected) but fingered me after with a chance he had cum on his fingers but niether of us are 100% positive if his finger actually did. I’m supposed to get my period April 19th and i’ve been bloated, cramps and back pain and nausea. Could that just be from pms or is it too early for that. Or could that very early pregnancy symptoms?