Could I be dehydrated? I'm on my period right now, or at least I think I am (I haven't had it in about two months) and I'm not cramping at all and I'm barely bleeding, and I started on Saturday. Even on Sunday and Monday I was barely bleeding. It feels like I'm not even on my period, but I know I am. I have also been getting some muscle cramps in my calf, and I haven't been going to the bathroom as much, even while on my period. Those are my only signs so far, or weird things that have been going on. Could it be because I'm not drinking enough water? Am I dehydrated or is my body just being weird right now?
Help please.

Thanks