Back and Chest Pain (also anxiety)

I've had a ulcer in the end of January, so I took medicines from a general doctor. It somehow didn't go well as it gave a skin rash on palms with the 1st dose so I stopped that medication and consulted family doctor. So the ulcer was gone but I've started having acid reflux. And my throat kept hurting a bit while eating. So I consulted an ENT, which gave a bit of relief but still the throat pain is slightly present, especially in morning and it seems like acid reflux is still there but it now happens very infrequently. But last month due to pain in back and abdomen near chest, I consulted a MD which advised my for chest Xray, blood & urine test. The reports came normal and prescribed me medication which resolved the symptoms. But since 4-5 days I've had slight pain in lower chest and back on the right side, it also feels a bit weird while breathing in, but when I don't notice it doesn't happen. I also have DNS. So do I need to consult a doctor or is it anxiety? And should I workout?