Might be pregnant idk

Okay so I'm 16. I've been in a relationship for a while and we started having sex. Eventually we stopped using a condom and just used pulling out. He never came inside me at all. I recently found out pre-cum has sperm in it. I'm late with my period and I have no clue why. I'm starting to really freak out and I just keep stressing about this. I don't know what to do because my parents would freak.