the exact same thing happened to me. i was before i was rxed with lupus. i thought i was gonna die, felt like i was choking. also, i would also choke alot on food. all that stopped when i started taking meds. my rummie said it was common for people with mctd to have chest pains. but when they get really bad dont ignore them. dont be scared to go to the er even if it aint nothing serious going on with you. you dont know that it's not something wrong if you dont have it looked at, right? pain is a very good sign that something aint right with us. i have learned to pay better attention to my pain and rashes,things i know that can tell me something is going on. but, sometimes you just cant tell what it is. we know our bodies better than anyone else.we just got to get a dr to check us out, and help us to have healthier lives. good luck to you, and go the the dr as soon as possible. dont play with something so important!!