from the pressure of carrying bags?

It goes away eventually, but last for an hour or so. I have very fair skin and have always reddened easily, but this is new. These blotches are somewhat raised and swollen, and it's where my hands have come in contact with the bags. They don't hurt, and aren't hot like a swollen area would be expected to be. It's almost like a bunch of little welts of all sizes and shapes. This is new, I don't know if it's a side effect of the drugs (Cymbalta and Lyrica), or just a symptom of the fibromyalgia. I also have Reynauds, which would make more sense, but it's over 100 degrees outside, so that's not the problem. I've noticed it several times in the last week.