Don't Know What I'm Doing

Me and my child's father have been broken up for a year, for awhile we had bad problems and just recently this past month we started getting along well last night we got in an argument over something stupid and today it finally blew up he screamed at me and cussed me over the phone and called me things, then told me he gives up being in our sons life and to not talk to him ever unless something is wrong with our kid or if I finally want to let him come get our son and let our son go with him (which I've never let him done because he was abusive towards me and has a very short temper, plus he cannot be trusted) he's not on the birth certificate for the reasons stated in quotations and more. It kind of upset me because we were really getting along. I actually had a panic attack after we got off the phone. I don't know what to do and I honestly don't even know why I'm so upset because I'm used to it. But today I had a panic attack over it and couldn't quit crying.