help me

So I took a picture of my self half naked on Snapchat with a filter, I did not send it to anyone, it was for my self, I liked the filter and I liked how I was looking. A year later someone hacks my Snapchat and uses the picture against me. I was scared, he threaten to post it if I didn't strip for him, he kept harassing me and telling me how much he wanted to eat my pussy--I have a boyfriend and I'm 17. I have been depressed ever since August, and I've been trying to not slip up and mess up. And I've been getting better at it, and not I slipped up. I was shaking and I was scared, I threw up and cried, I tried calling the police they didn't help(had to file a report) I called my auntie but she didn't answer  and my boyfriend was already on the line--he knew when I called them and said if I tried that again he was going to post it, he knew when I was going to try and leave the room and said If I did that he would post it, I texted my dads girlfriend and my dad and everyone else to slap it was 4 in the morning, I was scared for what he would do. I tried to talk him out of it and tell him to please not do this, I took my shirt off but that was the only. Now my dad and his girlfriend are blaming me. My friend called the police and When I tried to tell the police his girlfriend said knowing you, if he was cute you would of sent it to hm.thats not even true. They saying it's all my fault and everything . I don't expect sympathy because I'm sad that I didn't delete the picture, the guy is 18. My boyfriend found out where he lived. I got my phone taken, and now idk what to do, his girlfriend tried contacting my family to show them how "not good I am" (she doesn't like how I was raised) it's a long very long story. Please help me