My boyfriend....

I need opinions and advice, please. My daughter is 5 weeks old. My boyfriend, her dad and I did not have the best relationship throughout my pregnancy. Some stuff had happened after I had my daughter. My doctor prescribed me Percocet due to me having a C-section. I was in a shit ton of pain. I have never taken pain meds before and in the hospital they made me feel super weird. I fell down and it was just awful. I begged them to give me something else that wouldn’t make me feel that way, but they didn’t. One morning, I was making a bottle and my daughter was screaming. He wouldn’t help me and it literally broke my heart to hear her cry so I went and got her but proceeded to make her bottle. I dropped her. I feel SO awful. Still to this day. I took her to the hospital, she got checked out and is perfectly healthy and okay. He texted his friends, family, and EVERYONE making me out to be some awful person. DFS got involved and said that accidents happen, which is very true. His family was trying to make it out to be intentional and it wasn’t, I would never do that. I went to two different doctors because I was truly concerned about my health. I have never shook in my life, it only happened in the mornings when I would first wake up. Fast forward to the end of April, we got into a big argument and I left because I read messages where he said he wanted to kill me, etc and that he was taking me to court. I went back to him because I love him. He travels for work, my daughter and I are currently with him and he gets drunk every night and is just mean. Says horrible things and makes me feel horrible. His family is shady and I am staying with him because I feel like he will try and take my daughter.

Pictures attached of the conversation he had with his brothers girlfriend.

He swears he loves me and wants to be with me but I feel like he is just staying...