I agree with lexi. Sounds like the skin around the piercing has gone necrotic. That's already serious. I would get to the dr asap. You don't play around with infections. Especially when your pregnant and your immune system is already lower than it would be normally.
If it's that bad it could spread to your bloodstream and that could definitely be harmful. I would get it looked at as soon as you can
I dont think so, I habe a dermal on my chest right now and is rejecting...im gonna go get it taken out next week, if I were u I would get it taken out too...