Been gassy and stomachs been feeling weird. i wake up with a little bloat in my stomach now. stomach feels sensitive. what is this?

Possible IBS: You may have Irritable Bowel Syndrome. At your age (21 y.o) this would be the most "common " reason. HOWEVER, other bowel problems in your age group include Chron's disease and Gluten allergy. If your symptoms have been present over 3-4 weeks (Acute viral infection unlikely) see your Primary Care Provider for a more detailed evaluation! Hope this helps! Dr Z

See below.: There are many possible causes for this. I would recommend starting with a food log, keeping track of what you are eating and when symptoms occur. Possible causes are lactose intolerance, other food intolerance, constipation, pregnancy, among other possibilities. I would also recommend being examined by your doctor and discussing this with them if the above doesn't help.