Help please!

Okay so I'm 14. My and boyfriend got carried away and he put his dick in my vagina, for like less than 20 seconds.... I don't know what to do. I know it was stupid and I totally regret it I just want to know what I should do... I can't tell my parents they would disown me. I'm on my most fertile week rn and I didn't know. I'm really panicky any advice on what to do? No hate please I get what I did was stupid