I feel disgusting.

A 25 year old man sent me nudes on instagram. I am 15 and he knew that. I feel so gross I want to vomit. What do I do? I've had this happen before when I was younger but it was on discord and I didnt have my face on there. I told my mom and she said we should tell the police and I don't want to I feel so gross. I don't want anyone looking at me, especially men. I feel so disgusting.