HI.
I know that at this point, the biggest temptation would be to just do what your mother wants and move out. I'm a guy who's usually of the opinion that parents who act like this and ask you to move out are just parents who are hurt and disappointed with their child and especially with themselves.
Here's what I suggest: Don't just up and leave yet Wait a while. Don't be too anxious to get out of your mother's house without trying to fix things. I'm not even saying you should just stay there for the rest of your life. At this point, you really need each other and your moving out may be the easiest but not necessarily the wisest thing to do. Try to patch things up. Explain to her in as calm a manner as possible how this happened to you and how you intend to fix it -- with or without her help.
I think she needs to know now that you can be mature about this and not throw your life away. With so many teenage moms struggling with their lives and in the meantime making life very difficult for their kids, it's really not that hard to understand why more and more parents of teenagers are more easily upset by things like these.
Show her that you can be responsible. Running out the door will simply confirm the notion that all you're good at is running from responsibility and not facing up to them.
ON the other hand, she may be trying to teach you the very hard way how it is to be a parent and that is to do it alone.
Regardless, before you go on with this pregnancy, talk to her. If necessary, seek help as to how to bst approach her. Find a relative or a family friend to help you and to act as arbiter in that conversation.
Whether you leave home or stay there, you have to know what each other thinks and feels. You just can't leave it like a gaping wound.
If you really need help as to where to run to, though you may not be Catholic, try and find the nearest convent and ask for help from the nuns there. There are so many congregations of nuns who will help teenage mothers and they don't really care what faith you practice.
I'll be praying for you. Pray for yourself, your mother and your baby.
BTW, you didn't really mention anything about the baby's father. What about him?
Take care, honey.
Erick