I wouldn't let it get you down too bad,it's not the first time it's ever happened.
My brother ended up married to his pregnant girlfriend at that age and has been for 36 years,makes a good living for Norfolk Southern RR and has 3 children and 2 grandchildren.

I know it's too late now,but others can learn from this also,my wife put our daughter on birthcontrol at 15 even though she wasn't having sex yet,but nomatter how much you don't want it to happen it will,sooner or later.I kept my nose out of it the best I could and it worked out for the best.

Anyway I'll send a little prayer up for your family that all will work out as it should.