last week i had gas well at least it felt like i did. but nothig came out. but my upper middle stomach hurts. i feel hungry but dont eat sometimes cause food triggers the pain. my stomach feels hot. and my back hurts a lotttt. im constipated. and feel weak and sleepy. i feel that going to the restroom will help but nothing comes out so i wait for a while but no. when i lay down it goes away a little but still feel the pain. or when i stretch with my arms up it feels a little better. ive recently been having flu like symptoms since yesterday too. i feel sick like headache watery eyes and runny nose. sore throat sneezing. Should i see my doctor or go to the er??