Help please

Hi y'all I'm really scared to say this and I'm so sorry if anyone got it worse then I did but I was just wondering if this counts as harassment or sexual assault

I was at the beach and this guy I knew started chasing me.he finally caught up to me and plunged me under the water and grabs my boobs I tried to run away and I was screaming no please stop but he kept going I told him I wasn't having fun and needed to rest but he kept chasing me and plunged me under and I couldn't breathe I eventually ran away and he stay with his friends

I later learned he told all his friends we went to second base

I'm so fucking scared his going to do it again

I feel so gross and dirty

Please someone help