Struggling

Today is the fifth day in a row that I have woken up with swollen feet making it difficult to walk without pain. I get the added fun of my hands being swollen as well for the first day. I don't know what is causing this other than my Hoshimoto's disease.
I think food may have something to do with this, but I have been eating better for the most part for the last few weeks. I know I have eaten more junk this week than I did the previous week. I have heard that sugar can be an inflammatory substance. I'm sure there are other things I have eaten that could cause some of these issues. I may have to stick a bit more to the South Beach Diet than I have been. Giving myself a pass for dinner is not working, and the sugary snacks here and there are causing more issues than I thought.
I am tired of feeling this way. I hate that these symptoms show up more in the winter than any other time of year. I just want to go running on a sunny Saturday, but my feet hurting too much for that.