food!

Mary • 29. Momma to 9 & 10 year old girls, and a one year old boy.
I seriously wake up in the middle of the night nearly every night starving.. @ 6w2d is this a thing?! Am I the only one? 
My stomach is so upset right now and it's 0220 where I am and I have a normal sleep schedule of 2300-0700 prior to pregnancy.