Whats your problem Pal ? why are you getting worried about this girl you told us is a complete scammer, its not your problem, and even if my some stroke of miracle she is buntis, what can you do about it ?
As isme_iye has told you, its too early anyway, she is most probably using an emotional tool to get you to feel a sense of obligation to her, if I had dollar everytime I heard this scam geeeeeeeeze when you see a bump on her belly, (tell her to send a pic) and then have her paternity tested at a later date, you will then find out if and when she has a bump, whether its yours or not.
Until that time, forget about it, and by the way, there is no Child Support Agency in the Philippines, if thats what you are worried about.
Just make sure when she sends you a photo, that she has not stuffed a pillow up her blouse cos thats common as well.
Why do you feel the need to contact the Doctor, that will cost you money, let her go to the Doctor, its her body not yours, are you in a stable loving and subsisting relationship with this woman, if so, that I could understand, but if your'e not, and youre not staying with this woman, then she decided to have horizontal olympics with you, she takes the fall as well.
Anyway you have no idea whether she is monogamous or not, how do you know who she has been with, she could have a Filipino boyfriend as well, and don't think these girls don't have one, thats common as well.
Don't do anything impetuous at the moment, think before you do or say anything, take time to calm down and breathe, and let time take its majestic course.
Best of LUck