Hello and welcome to HCM
can lead to pain in a widespread area above the umblicus. The pain can be in the chest, it can spread to the back. it can be in the upper abdomen.
However, the pain in the armpit can be in the breast tissue whicg extends for sone distance in the axilla
See, whether you have the pain during or before menstruation
. If this association is found then this pain could be due breast problem.
Besides these causes it could be a muscular pain
A complete examination needs to be done to find out the cause.
For your acid reflux disease it is advicable to decrease the intake of tea, coffee, alcohol.
Diet should not be very spicy or fatty.
While sleeping keep your head end up to avoid discomfort at night.
You can take a PPI like rabeprazole
20 mg for relief.
Thank you and take care
Dr Shailja P Wahal