I just need to vent and feel supported

My 3 month old baby boy has a real winner for a father. He is an addict who can not stay clean. He can not or rather will not keep the same job for more than a month or so. He was in an Oxford house and doing well u til he decided to move out tonight because two weeks ago he felt disrespected. I'm like who cares. Nobody owes him respect and yes he should get respect as everyone should but seriously grow up. It already costs me $13 to get to his place for us to spend time together as a family and I literally just started working again after he got our cars repossessed. I struggled the entire pregnancy because of him. He was supposed to be my support during labor and was worthless and unsupported during that and actually yelled at me about 5 hours after the baby was born because I didn't want to get out of bed and bring him a towel. I had to pay for both of our bills often working up to 14 or more hours a day during the pregnancy and was forced because of his actions to move more than a dozen times during the pregnancy. He throughout my pregnancy and after has been texting other women saying come get in bed with me come cuddle me and asking for nudes or sexy pictures. He has been profoundly cruel. Even tonight his text to me he said and I quote "fuck off U insignificant downgraded hateful ass bitch". He moved from a place where I could actually bring our son to see him and felt safe doing so as there was no cigarette smoking inside, no drugs, no alcohol, and was almost affordable to a place that would cost me $26 to get there, they smoke inside and there are random people in and out and a chance of drugs and alcohol. Keep in mind I am a recovering addict myself having over 15 months clean. I just got done fighting a dcf investigation and I am not willing to do anything that will risk my son. Let's add that right now my mom who lives 45 minutes away from me is in the hospital and I was told she either needs a new liver or to go into hospice care. I can't keep doing this while feeling alone. I also tried to start therapy today but they gave me a therapist I am not going to be compatible with due to my belief system. I just need support right now.