Hi Chetan - I sure hope you get some relief soon. Perhaps there is someone else on this forum who has some experience with hiccups. I did check out the Mayo Clinic site as to the causes and they do have some interesting info including nerve damage or may a hair in the ear touching the eardrum as the cause:
http://www.mayoclinic.com/health/hiccups/DS00975/DSECTION=causesThere are also treatments and drugs suggested (see left side of above url page) that you could probably ask your doctor about if the hiccups last more than 48 hours. Maybe by the time you read this the hiccups will be gone. I sure hope so. Let us know what happens.
