I need advice

Okay so a day before my period started me and my boyfriend had sex , he pulled out and he came on the seat , no where on my body, so my period came and a few days after I got off we did it again .it didn’t feel right but he swears nothing came out for the past 3 weeks I’ve been bloated and had sharp pains on and off on the left side of my stomach also been really dizzy from time to time. Could I be pregnant ? My period is only one day late so I don’t know what to think so far . And if I am pregnant I’m still in high school and my boyfriend has a lot going on for his self and my dad would press charges if he found out I was pregnant, what should I do ?