If the tongue changes its colour to black suddenly during pregnancy, is it harmful and how is it caused?

Answer 1

I have never heard of this before but I found this..........

“An adverse reaction depends on the drugs you use. Too much bismuth subsalicylate, for example, can turn your tongue black, but the reaction is temporary and harmless,” says Eric Shapira, DDS, MAGD, MA, AGD spokesperson. “Also, too much antibiotic usage can do the same thing and give you a black, hairy-looking tongue. And, any acidic type of medication can cause canker sores, including chewable vitamin C.”

hope it helps.

Answer 2

Did you take pepto bismol? That will change the color. If not, then I'd ask my doctor.

Answer 3

Have you been taking bismuth/pepto bismal?