HELP PLEASE

I have had a very wild past and I was a drug user and promiscuous. Well I've been clean for over three years now and I've only been with one man since then, my boyfriend of 2 and a half years. Well today my boyfriend got a Facebook message from a fake account with three very explicit naked pictures of me (my face wasn't in them but my tattoos were) that I took about 5 years ago with the message "this slut is a recovering druggie, and everybody has had their turn." I know the pics of are me, but honestly I can't remember  exactly who I sent them to because it was so long ago and it came from a fake account. What can I do about this? Can I contact the police? Or contact Facebook to find out the owner of the account? I consider this sexual harassment since those pics of me were shared without my consent. Is there any legal action I can take? Thank you