Please Help Me!!!!

Okay, I need people that actually know this to answer please. Okay, so it was last Sunday (I got a birth control shot for the first time that Friday before and my period ended that Thursday) that me and my boyfriend had sex right, he came the first time in a condom but cleaned up with a rag, but later on were having sex again, but with out a condom. He didn't cum in me at all we stopped becoming alittle scared of getting me pregnant. My periods usually last 4-5 days so I don't know my ovulation cycle really well yet. Could I get pregnant from the first time he came?