HI, thanks for using healthcare magic
It is possibly the psyllium husk, as you mentioned, because fiber can cause an increase in bloating and belching.
It can take a few days (usually three to five) , for this to be resolved. If this time frame has passed then there may be another cause such as :(A) GERD- this is common and the use of
reflux medication plus diet changes may help
Reflux meds such as protonix, nexium, prilosec, prevacid , would be best.
(b)other aspects of diet eg broccoli, cabbage, brussel sprouts, turnips, beans, carbonated drinks, prunes
In terms of the belching and the
back pain,they are not likely related though as you stated, back pain can occur with
constipation.
The back pain may be due
muscle strain or injury. Rest and the use of warm compresses may help this.
A
muscle relaxant would help if there is any muscle spasm.
If it persists, then you may need to see your doctor.
I hope this helps