Trigger warning. I need to tell someone.

I was visiting my old town by myself and was staying at my best friends house. While she was working i was meeting friends i havent seen in ages. Anyway theres this guy named Aaron and ive known him since year8 we were a thing once anyway he wanted to hang out. So he knew this spot and it was through bushland and i kept trying to turn back but he kept pulling me forward. It started out as holding hand and then he lifted down and put his hands under my skirt and then grabbed my ass. Then he kept kissing me and rubbing mg vigina. We finally got to this spot and we were just talking and then he told me to take my panties off and sit on his lap i tried to keep talking but he just kept pushing and pushing ans i couldnt leave. Then he made me lay on the rock and he started fucking me rougher. After it happened he was a jerk. I found out he came in me, im not on the pill. Im now late and have pregnancy symptoms. I have no idea how to tell me mum but i really want to tell her .