Worried

We've had sex about 3 times since my last period and my next isnt due yet. Alll three times we used protection but before actually doing the deed he rubbed it against my vagina and I know for a fact I felt precum around my clit and a little lower as well. Now my stomach hurts and I think I've been peeing more than usual, I feel tired and weak and Im getting worried these are pregnancy symptoms. Am I right to be worried?