<s>[INST] the other day i started getting chest pain but did not think anything of it as once before i had that and went to see a doctor he told me it was ang. pain but then my stumic started to feel like a knot was in it about and 1.5 hours past and i started throughing up then chest pain is gone but my stumic is still knotted and sore what should i do [/INST] Warm  welcome to Healthcaremagic.comI have evaluated your query thoroughly .*  There are various  reasons for this presentation  as    -  acute gastritis  -  intestinal infection  -  coronary  insufficiency      -  others .*  Needs clinical evaluation for the parameters as well as  EKG report .Hope this clears your doubt  .Wishing you fine recovery .Welcome for any further  assistance .Regards dear take care . </s>