Worried

Okay, backstory....so I’m a person who is very active and has a very irregular period. I also am in college right now (freshman) first time having sex, a while back we had it on my period. I’m not on birth control because my mom doesn’t believe in it and thinks that it makes you infertile; if she ever found it I was on it though she would kill me I’m pretty sure😬 and I don’t want to get on it because it would be on my parents insurance. My bf and I have had sex the last 3-4 weeks like once a week. We always use a condom and he always pulls out WAY before he cums and I’m almost positive it never tore or ripped or anything. But the app says I was supposed to get my period on the 9th which I know it’s just a prediction. Still worried and I don’t know what to do, I am going to wait till Tuesday to get a pregnancy test because my period is wack. Any advice would be greatly appreciated