Anxious

So I was late for my period by 3 to 4 days and it's the seventh day now and on the 4th day my bf and I made out.with no clothes he did not cum.. his penis was just close to my vagina for like 10 seconds and he dint even feel that wet according to me ..any chances of pregnancy I was late for my period before all this anyway and haven't had any sexual activity for two months until now?! Should I even worry?!