Having shooting pain under left underarm, which sometimes goes to upper breast area and middle of the chest. There is sometimes pain in right underarm too, but it is prominent more on left. Ecg was ok and was given a course for 15 days for gastritis and nerve pain. The medication is over and again I sometimes have sharp pain, what can be the reason ? Also there is sudden emergence of veins on chest area and both breasts. Recently, i have put on around 3 kgs and my tsh level came as 5.7 my thyroid medication is now increased from 75mg to 88mg