Spots are popping up on me

I have red spots popping up on my stomach that have been there for a while. I didn't think much of it because I used to shave my chest and when they started popping up I stopped. It's been all together 6 months and they are getting much worse. Due to lack of insurance I have yet to seek medical attention. All I know about them is that they are light until I work hard and sweat then they raise and get much darker. It's spreading across the whole front side of my body. They don't itch or anything. I have been checked for multiple times. The last month it has went from my stomach and around the belt line to everywhere above the belt line over my shoulders. Any help would be greatly appreciated.