I need help, and am not sure where to turn.

I'll try not to write an essay here. Just please understand I'm not posting here to get backlash about my and my boyfriends stupidity of not using a condom. I very well know and knew about precum, but in the heat of the moment I did something stupid, and thought I'd be lucky enough to get away with out a condom
Anyways :( the point is:
-I'm 19
-I ran away from home at 18 due to terrible relationship issues and abuse in my own home
-I ran away to Australia, to be with my boyfriend and his family who graciously took me in
-I'm an American who is here on a visa and I have no insurance. Which means extremely expensive hospital visits if I do go
-My boyfriend only makes enough to barely support the two of us. We don't have the funds, the home, the schedule, the stability. We can not support a baby right now, it would be brought in to a terrible situation
-and lastly, I'm possibly pregnant, taking a test tomorrow. 
-one last note, if I'm pregnant I'd rather stay with my boyfriend. I CAN NOT go home. They may "take me back" but not kindly. Please dont make any assumptions about, "ooh well theyre family it will be fine". It really wont be. Going back home to America is not an option in this case.
I'm just, I'm so scared. We're young. We have no money, and this is a very crappy, unstable, expensive, documnet filled, possible deportation situation. :( I do not want to bring a child in to this.
If you were in my shoes, what would you do? :(
My immediate thought is abortion, I can't see a better way. When I have a chd I want them to at least be brought in to a life where they can be taken care of. Please help :(