Is Calcium a Metal?

Everything I learned in school says that calcium is a mineral, not metal. Unfortunately, I have forgotten much about what minerals are exactly as well. What I do know currently is that it is essential for the healthy development of the pregnancy - for both the baby and mother, so I make sure I take a calcium supplement regularly.

So currently, all the stuff I take -

1. Iron
2. Calcium
3. Folic Acid
4. Pantoplex - which is some kind of mix of vitamins and stuff.

I have never taken so many pills before! and they say that you aren't supposed to take any medicines during pregnancy!