My friend Alyssa has been getting a sick feeling and her stomach has been bothering her. Is she OK? She is scared; she's so young, only being 18 years old. She said she does puck but only a little; like you do when you gaf on something; but she's not gaging on anything. She is using the bathroom a lot; about twice as much as normal and she doesn't drink a lot to use the bathroom so much. She seems to be two different people at times; so I am taking it as mood swings. She hasn't been eating much; once or twice a day. She use to eat all three meals. She hasn't told me the whole story so I don't know what's going on in her life. These are just the things I have noticed

Sounds like she could possibly be bulimic or anorexic

Is their a chance she may be pregnant??

With the mood swings it sounds like it may be hormonal. That can cause nausea and mood swings.
It could also be stress, sometimes when a person is overly stressed it can manifest itself as physical ailment, which could cause the excessive bathroom use and vomitting.

In any and all of the cases, she should be going and be checked with her doctor

I think she may be pregnant. She has been complaining that her nipples are sore and hurt really bad to the touch.