vindictive ex boyfriend

Recently I was dating this guy who no longer made me happy, but i was pregnant with his baby. We kept talking after to see if i would keep the baby, all while he tried to win me back. He threatened me and my son, thretaned to black mail me, and harrassed me when i was singke with his baby. I had rcently before i started dating this guy, gotten out of a very emotionally abusive relationship, and was left with the baby.i still have ptsd, ocd, depression, and all that from that relationship, and it affected how stressed i was during this most recent relationship. So when my now ex and i broke up, my ptsd started to kick in with it and made me so sick and made the peegnancy just terrrible, with pains and cramps, constant diahrrea, fevers and everything. My ex wanted me to keep the baby and threatened me if i didnt keep it, then tried to say he loves me and he would do anything to keep it. He tried to propse to me, get a lady to scare me shitless to get back together with him and keep the baby. I then told him i scheduled an abortion, while i was finally having a nice talk with him, hoping all the pain was over and we might get back together if he is going to show me he is ready and not see mean anymore, but he hung up on me and never called back. He texted me the morning of saying what i said yesterda is what i mean and i hope you make the right choice. I get the avortion done, and make sure he knows it wasnt against him, it was because we werent financially ready, it wasnt planned, and we both still live in our parents house with no money. I told him i loved him, and we could try later but for my mental health and the baby, I rather give it a better chance, then with a torn family, and me being a single mom who cant really handle her one. He says he will leave me alone, and he wont say anything. The next morning, I am harrassed on facebook, on my phone by text messages, and calls calling me baby murderer, saying i need to go to hell. That he never loved me, I need to kill myself, i should kill my child or have him taken away from me. He also.even went to the baby daddy to lie and try and get my son taken away from me. I had to file a restraining order while all day i was sent all these texts as he ruins my life. i had to file for custody, and now am having the most ugliest of thoguths. He told me he would be fine and leave me alone, he sent me massages saying abort the baby, I never want one with you anyways when we were together, so why be like this now why be so mean. I fwlt really bad and almost didnt go through with it. But i did to better my sons and I life without this man. Am i in the wrong? and please non hate, been getting that all these days and it needs to stop.