for the last week I have been having this upper belly burning and nausea,along with loss of sleep,apetite and heartburn.I have not been sexually active in several years but have been told that it is still possible to become pregnant other ways.(no real explanation)although there are other males living in my house where we share the same washroom.I have done two pregnancy tests about 4 days apart for each other and they came out negative.along with all this I have had to use the washroom several times in short periods of time throughout the day. i cannot put my finger on what could be going on with my own body.

stumach nausea and burning,
loss of sleep
loss of appetite
heartburn
always tired
headaches
pain in neck
always using washroom