Hi there, I have been having this feeling for over a month really bad now. I am also 27 weeks pregnant and I feel this tired feeling in my chest and throat which kinda feels like when you inhale a cigerette too hard and it kinda burns. It makes me literally feel tired I also get this pain in my upper stomach and I'v been burping and have had a ton of heart burn. I'm sure a lot may have to do with my pregnancy but this throat and chest thihg is driving me crazy plus I also feel short of breath. I have had EKG, Holter, and Echco and everything was ok so I know it is not my heart cause I have also been getting chest pain. I feel like I'm just going to fall over and die.