I've been feeling really really sad for the past few days or so, I just started my period yesterday. I feel physically weak and exhausted, I don't want to go anywhere or see anyone or do anything. I feel so annoyed and feel like crying. I'm also pretty anxious and just feel kind of sick. Everything is bothering me. I just want to lay and bed and do nothing. Is this normal for a period? I normally don't feel like this, and I actually don't feel like myself at all.