Hello, This is a little embarrassing but...recently during sex my husband somehow managed to get my nipple up to my mouth. (don't ask how..im not sure)..NEwayz I noticed that it tasted a little like metal. Not really strong, but it was there. I asked him about it during pillow talk afterward and he said that sometimes it did and sometimes it didn't. He never said anything because it didn't really bother him. He thinks that I have high levels of iron in my body, but actually it is just the opposite. My iron is always very low. Every time i try to give blood i can't do it because of that reason. So we started looking on-line and there is nothing about it. If anyone knows what could be causing it, or if you have experienced the something similar please let me know.