Rashes?

So I’ve recently noticed these small rashes that are developing all over my body. They don’t itch or burn or anything. It started with a large one on my neck that I’ve had since I got pregnant (I’m currently 24w). I thought it was just eczema or a stress rash because I get those a lot. But these are small, like probably the size of a pencil eraser. I have been noticing more appearing every few days I think. I’ve got them on my hips, belly, bikini area, one on my arm and a ton on my boobs and under and around that area. I am bringing it up with my doctor next time I go in but that isn’t until the 16th.