The symtoms suggest gastroenteritis
.the nausea( ,loss of appetite ,pain under Rt. ribcage are due to digestion problem &gastritis
.Loose motions &pain in lower left indicate enteritis(inflammation of intestines.).Increased thirst indicate dehydration
,which sometimes needs IV fluids .
Pl. visit your doctor to consult &proper specific manegment.
Few investigations -stools routine & microscopic,urine for Ble salts ,pigments (toexclude haepatitis)should be done.
few changes inyour life style would help.eg.-have nonspicy,nurishing food like curds,soft drinks (noneffervasent),lot of water(Boiled &cooled),boiled rice, or boiled rice with mung dal(khichadia boiled semisolid preparation),ORT
in plenty, coconut water etc.Many atimes strict observation of intke &rest give releif.
When infective gastro enteritis is diagnosis,i give combination of ofloicin with ornadozol, ranitidin,ORT preparationfor fluid replacement &very light food.
Take care. Thanks.