over the past four weeks i have been feeling nauseus most mornings ,after eating breakfast i feel a little better then my stomach starts rumbling it rumbles most of the day stopping for a while when i eat,i get nauseus during the day and sometimes have to force my self to eat,along with this i feel a little jittery at times. on top of this i am having trouble sleeping ,when i lay on my side it feels like i cant breath properly.any ideas,i am usually very healthy but a bit overweight which i am trying to lose at the moment,any ideas ?