I have the same symptoms as you do. about a two months ago i kept having heart palpitations and was afraid that i might have a heard disease or something. I am fairly slim of Asian descent (53kg or about 117lbs now) and tried to keep myself in shape most of the time. But i had an accident earlier this year which i think traumatised me a bit and i've been out of the gym for a few months.. During this time i think i had developed bad eating habits and a slight insomnia.. I ate less during lunch and no breakfast nor dinner in the same day. And at night i didn't want to sleep because i was afraid to fall asleep. I think my body could take it anymore and that was when my problems began.
At first, i noticed that my heart rate going up while i was doing literally nothing, which frightened me at first. I went to 3 GPs, and usually by the time i reached the clinic and they put on the EKG monitor on me, my heart wasn't racing anymore and was diagnosed as normal heartbeat. They said i had a panic attack was stressed. But i can tell you that i was not. Finally, the last GP who attended me recommended that i went to see the cardiologist just to ease my mind. So i went to the cardiologist who asked me to wear a halter monitor to check my heart rate during a 24-hour period. Sure enough, when the results came back, at one instance my heart rate went up to 167 bps while i was just playing games on my laptop. Surely that is not a strenuous activity?? But in any case, the cardiologist checked my heart, did some scans and did a thyroid exam, which everything came out ok. He couldn't see anything wrong.. But he gave me Coralan (Ivabradine) just in case my heartrate did come up again. When it did went up, i noticed that it went up right after a meal or when its mealtime, but by accident or otherwise, did not have my meals on time. If i kept to my meals and ate smaller portions, (except for some food) it was ok and won't get my heart racing.It made me think that since my heart was ok, there must be some other reason why my heart was racing at right after a meal or at missed mealtimes.
Then, i started having bloatedness, i kept having gas and feel like something is in my throat nearly all the time. But i don't have heartburn. I never did have any symptoms of heartburn. So i went surfing and found out that it might be reflux. So i went to see GI doc. After a bunch of scans and endoscopy procedure, everything seems to be in order and normal and she said i have a mild reflux and prescribed me Pariet (Rabeprazole). Its been two weeks now and seems to be working ok. I try to eat in smaller portions now and also trying to identify what sort of food i should avoid. Its a bit tedious but necessary i guess..
Oh yeah, for the bloatedness and gas, i suggest u chew on chewing gum.
Not good for your teeth i know.. but it helps with the burping somehow.. not a solution for the problem, just relief.. it sorta works for me, you could try it, but i'm not sure if its for everyone though..