Losing teeth?!?!?

Illian
I'm freaking out right now!!! I was in the shower and I felt something in my mouth and it was a small sliver of one of my molars!!!! I've had relatively healthy teeth all my life. Has this happened to anyone else?! The baby can't be taking that much calcium from me can they?! I currently take 1,200 mg of calcium daily. Maybe I need more?! I don't want to lose my teeth!!!