if this is auto-immune related two possibilitites come to mind: raynauds or periphrial nueropathy. when your feet swell and turn red are they also hot? If so, you might try putting them in cool water for a few minutes. Be careful, however or it could go the opposite direction and they could get cold and turn white or blue. periphrial nueropathy is usually numbness and pin prick sensations in the extremities. sort of like when your feet fall asleep from sitting too long. I, however, am not aware of swelling associated with this.

The tightness in the chest I have been through that and thought I was having a heart attack. It's name is "costocondroititis" and if you have access to the internet I would look it up at the [link removed]. It is a sudden or gradually inflammation of the tendons and ligaments connecting your sternum to your ribs. It can go all the way around to the back and make you short of breath because the inflammation is squeezing your lungs. The next time this happens try this; take 3-4 ibuprofen, get in a hot shower or use moist heat and stay calm. once the anti-inflammitories start to work you will start feeling better. there is no cure, simply be aware of what to do, however, if you think it is a heart attack by all means head to the emergency room. one quick test, press firmly on your sternum, if it is extremely sore its costocondroititis. Heart attacks hurt on the inside not outside.

good luck, and good day
Mia

Your best bet is to go to your local community hospital that has to see everyone and see a rhuematologist.