I am 28 weeks and haven't gained a pound in a month. (I started at a healthy weight but have barely gained 12 pounds though my stomach is huge)

All I want to do is sleep. I can barely function from fatigue if I don't eat, and after I do eat often as well. Coffee is keeping me productive enough at work, don't want to over do it. The commute leaves me wanting to lie on the floor of the bus/ subway a hot and dizzy lumo where every step is totally draining. I know I have low and then high blood sugar issues, but I don't appear to be diabetic. Taking chromium supplements and my prenatal, but I have so much to do and so little energy to make it happen!