You’ve been with this guy since you were only 16. My guess is that you have so little experience with relationships that you are terrified to leave this one. It’s all you’ve known. Your story is the story of thousands upon thousands of women who get trapped in abusive relationships. You know you should leave but you think you can’t. Your boyfriend has isolated you from your supports and threatened you and your baby. He’s convinced you everything is your fault. (It’s not.) Of course you’re scared.
The good news is that he is out of your life for awhile. Use the time he’s in jail to get some better information and to develop some supports. Your province has a network of women’s shelters. Go to this website.
You may not need a shelter but you certainly need the information and referrals that these organizations can provide for you. Get some counseling. Join a support group. Get more information about your legal rights.
I don’t know why you dropped charges when he said he’d have nothing to do with the baby. That sounds good to me. If you can’t bring yourself to get out of this situation for yourself, I hope you can think of your baby. This man is not someone you want to bring up your child.
I wish you well.