Welcome in H.C.M.
I have gone through your query regarding feeling of lump in throat and pain and swelling in different joints of hand and foot.
Considering your all symptoms it appears as you are no doubt having some arthritis
in your different joints of body. As far as your feeling of lump in throat is concerned it is most likly GERD
(gastro esophageal reflex disease), but ideally your throat should be examined internally by an ENT doctor to rule out any lump or neoplasm
You may take antacid
along with your present medication if it is GERD you will get relief in 2 or 3 days, otherwise consultation with ENT doctor will become necessary.