I feel something in my stomach below my belly button what could that be i only feel it when i'm laying on my back at night and like once a week. ?

Circumstantial sxs: Stress can manifest in many ways--emotional lability, lack of energy or drive, decreased libido/performance, hives ; other skin manifestations, chest pain, air hunger, perioral numbess/tingling, tingling in fingers/toes, overindulgence in food ; substances, GI spasms with resulting diarrhea/constipation/nausea ; abdominal discomfort, headaches ; more significant neurologic problems, etc.