abnormal bleeding with pain

Hey,

My girlfriend is 18. She has been taking birthcontrol the whole time we've been together. (6 months). About 4 months ago she had an abortion, and she never went in for her second checkup to make sure she was OK. I tried to force her.. but you can lead a horse to water.. but you can't make it drink. So she never went in for her second checkup.

Since then, however she has had a PAP test and a pelvic exam both of witch were normal (she had a appendicitis and they check her while they were seeing what was wrong.) SO ANYTHING would have shown up if there was a problem, right??

Anyhow... about two weeks ago she finished up her period.. and had forgotten to take her birthcontrol. She missed about three days and then remembered. So she took them all with about a 4 hour time frame between each (as her instructions said to do). She was fine for a few days then she comes out into the kitchen and tells me she is bleeding... not too badly, but just kinda spotting. It was strange, since it wasn't expected due to her having her period just about 4 days before. Well it has been about 8 days now and she is STILL bleeding. It has gotten worse.. she goes through about 4/5 tampons a-day and she is bleeding heavy. Today... she was weak and tonight when she got up and walked around she went and threwup. She is shaky if she stands too long, and she is very tired and weak. We don't know what's going on... and she doesn't seem to think it has anything to do with the abortion, cuz she had a PAP and examination since then. So we are confused...
(she might be anemic??? she has a history of that)

PLEASE H E L P US! =(

-David