Mystery breakout/ doctor doesn't know what it is
I am almost six months pregnant and about three weeks ago I broke out just on my back. Some say it looks like rosatia others say nerves or a rash... etc it's little red bumps . Now it's ALL over and it itches 50 times worse than chicken pox and no matter what I do I can't stop scratching. I haven't slept for3 nights because of it and it never stops itching even though I've scratched it till it bled. Does anyone have a clue what it could be? I would REALLY appreciate your answers.