Hello! I Have A Friend Who Has Been Feeling An

Hello!
I have a friend who has been feeling an unusual illness for the pas couple days . She experiencing long-lasting headache. and the pain is unbearable at times. she also threw up a little foam and blood once. she has no insurance. so before she plans to make a trip to the er she wants an idea what the case sounds like. I hope with this little information you will be able to help