Think I'm pregnant probably not just please read this and give advice...

So yesterday me and my boyfriend of three years finally had sex. Im nineteen and he is twenty I was a virgin and he wasn't, so that means he was in complete control of everything which I like anyways. But any who we had sex about four times and I don't know when I started bleeding in between those four times, his was on top the first, second, and fourth time. But the third time he was doing it from behind and felt good but a Lil painful anyways but the forth time we did it without a condom and it felt sooooooo good šŸ‘šŸ‘šŸ‘šŸ‘ but I was so scared because I'm not ready for a kid. He said he didn't cum but I don't trust that and when he was going deep my abdomen start to hurt and my hips and thighs. I don't if its a mental thing or what. But to anyone that reads this can help me out or know what's going on or can give me some advice I would really appreciate it.