Hi I am a female my stomach have been hurting for about a week now.it first started off with me waking up in the middle of the night with stomach pains. I threw up and had to use the restroom at the same time. I felt very very weak and I had to lay down. It was hurting that whole day. The next day it stopped a little bit. Five days later my period came on but I. During my 3rd day I started feeling the same way weak, in pain, and felt as if I had to vomit. I am really scared because I don't know what's going on. I still am a virgin so I just need answers what may be the cause of this.