3AM Feeding

Every morning I wake up at 3AM (this is so not normal for me) and I need to pee, I'm dying of thirst, and feel like I haven't eaten in weeks. I finally caved and raided the pantry -just having half a nutra grain bar. Of course, my husband comes out to me in my pajamas attacking the pantry like a ravenous bear, wondering if I'm okay or have lost my mind lol. Does anyone know why sleep is so difficult right now? Someone told me it is grooming me for motherhood (a life with littleto no sleep)...