For the past couple weeks I my stomach has been really weird. It has pain that varies throughout the day. I have been going to the bathroom more than usual and many times I have no bowel movement at all but as soon as I leave it feels like I have to go to the bathroom again. I also have been going to sleep earlier than usual and for the past two days I have had nipple pain. I am not sure what's going on. I had my last period on Oct. 30th so I do not think I am pregnant although I could be. Is there any other explanation for these symptoms?

I'm not sure this is the best place to ask the question. Have you checked with your doctor? There are lots of possible explanations. Some that I can think of are ulcers, irritable bowel syndrome (IBS), Chron's disease, ulcerative colitis, stomach ulcers, etc. However, the nipple pain and the bathroom breaks do suggest a possible pregnancy.

Check out this thread:

https://www.askmehelpdesk.com/womens-health/do-you-wonder-if-you-pregnant-78869.html