new to group ..weird GERD/gastritis symptoms???

50 y/o male reasonably good health until jan. of this year. the following are all problems I've had since then: lack of appetite, weight loss (from 195 to 150 in 4 months) shivering, stomach pain, sinus, eye and ear pain. Ended up in the hospital April one with C.Diff, weight loss, acid stomach and pain. I was convinced I had cancer or at least bleeding ulcers I was in so much pain. I received the folllowing tests..... Cat scan, stomach and head (normal) multiple blood tests (all normal) Multiple cardiac tests (all normal) chest X-ray (clear) Colonoscopy (perfect condition) endoscope (Inflammation/ gastritis)
Did some research and found out that the C.Diff is a side effect  of Nexium etc.  This is the weird part... The acidic feeling I get seems to be more of a gas than a liquid. The most painful part of this problem was that after eating I
would get a feeling in my back and under my arms that felt like my skin was on fire. This was the worst when I would lay down and this caused me to average 1-2 hours of sleep per night for 4 months. When I would lay down it
felt as if the acidic feeling would come from stomach all the way to the top of my head. Has anyone experienced
symptoms like mine where gastritis would effect the outside of the body (burning back, under arms, ears etc) and
not just the stomach????????????????    Now I  still have not gained any weight, My C.diff is back ( another 2 weeks of antibiotics) low appetite, very hot feeling stomach and i have to stand up to keep the acidic feeling out
of my chest head and back. PPI's Maalox, Pepto, Tums and baking soda have no effect on my stomach. So does
this mean I dont have acid reflux if none of these work???? I found a condition called silent reflux and I seem to
have 90% of the symptoms. My doctor (of course) suggested I take a stronger acid blocker even though they offered no relief and can cause stomach conditions that make it easy for C.Diff to thrive. I plan on trying betaine
and enzymes after i finish this latest round of antibiotics.
The scary part of this is that I seemed to have lost more than half of my muscle since this started....is it common
to lose so much muscle instead of fat??   How long does it take to recover the weight and muscle after losing
so much????

So please help with any ideas about my condition