What is going on?

Lately I have just been so out of it. Tired. Grumpy. No patience. Insecure. Emotional. I'm trying to be better but ita just not working out for me. I feel bad because my 14 month old daughter is used to having ke be very involved. Sitting and playing with her. Teaching her things. Cuddles anytime she wants them. But for the last few days I just want to lay down or take a nap. I dont feel like going along our routines. I'm about a week away from my period being due so Idk if its just pms or what? As I am typing this my husband is rocking her back to sleep because she woke up and I am just tired. I just want to feel like myself again and i dont want my daughter to feel like things are changing between us. I feel very very bad. Pic of my princess because I really love her no matter what.