omg I'm exhausted today!! I don't know when I was this tired is it normal to be this exhausted at 28…

omg I'm exhausted today!! I don't know when I was this tired is it normal to be this exhausted at 28 weeks? I fell asleep sitting up on my bed woke up walked out into the kitchen ate a few mini doughnuts got tired again and now I'm back in my bed : (