premise: On my second month on the pill i had severe abdominal pain with vomiting but it only lasted 5 hrs and then went away . I did n't stop taking the pill because it had only lasted 5 hrs and the pain never came back after that . Is this type of pain normal for the first few months ? Severe abdominal pain is one of the side effects to look out for why is this ? What 's a possible reason the writer had severe abdominal pain while on the pill ?
hypothesis: Because that type of pain is normal for the first few months .