onestly hun, I have a few things to imput...
First of all, I know you love your boyfriend... but you should start focusing on the positiives! Focus on yourself and the child you are carrying, making plans, getting your pregnancy in order and your plans for th future vs. worrying whether your boyfriend is manning up.
Sit down with him and have a blunt face to face conversation about his past and current actions and the way he is making you feel. How he reacts to you bluntly telling him how you feel and what you would like him to do, will show you the type of person that he is.
Also you do not need insurance to purchase prenatals... they even sell them at walmart... People who arent even pregnant take them for different reasons so they are readily available.
If you having insurance is what is holding you back from going to the doctor, then apply for temporarly medical until you get insurance in order.
Goodluck