My girlfriends is 17 years old and shes about a month and a half pregnant. And she was worried because she was bleeding when she went to use the bathroom, so i looked at this website and i saw that it mentioned miscarriages. she has had a miscarriage before, and shes been cramping, and goes from one minute being hot to the next minute being freezing cold, and she has been throwing up everyday, and i was wondering if you think she is gonna have another miscarriage or if you think that it is just something normal that happens to some girls?