scared of being pregnant, help please

i had sex 2 months ago, he didn’t even cum because we stopped. I know there’s precum i’ve been on the pill but i fucked up taking it which threw my period off for a month or two, i got my period last month or what i thought was my period, i’m still on the pill everyday, i tested and it said negative but then where’s my period it’s 2 weeks late. do i still have a chance of being pregnant i’m scared and confused