First, read this:

Can I sue someone for defamation if they post naked pics of me on the internet? | Internet Law

The general consensus is that a call or letter from your lawyer would deter him from acting.

Note that the link above is about whether you can sue for defamation; your concern is not that - you just want to prevent him from distributing the pictures, so do not get disappointed while reading that you might or might not have a way to sue him.

Note: an injunction is an order from the court not to do something. It would not give you monetary damages but it would prevent the guy from distributing the pictures. I doubt though that you will need an injunction. One call from a lawyer should do the job.

You need to involve a lawyer, especially since the bf screams and swears at you. It would be worth the money spent. The bf would not get far screaming and swearing at your lawyer.