I doubt it, but still have my thoughts of being pregnant ?

My bf and I had sex in January 11 protected (he wore a condom) and he had to take it off once and he came, but afterwards he didn't clean himself and he was trying to put his dick in me without protection and he got it in for a couple seconds and then I pushed him off and we were laughing and I told him no so he got a second condom and we did it again, but I think he kept going even after he came so I'm scared that some cum might've slipped out??! I got my period the month of January and February but they were lighter than usual (I'm regular) but didn't get my period at all the month of March but I got it April 1st and I still have it (April 5th) but it's not continuous could there be a chance I'm pregnant???