Nauseous at night?

Jensa • Mom to Raven & Gabriel❤️

What are the causes of getting nauseous at night? For the past couple of nights I keep getting nauseous only at night. During the day I am completely fine. I am weeks 8 pp and have yet to get my first postpartum period, I started birth control two weeks ago. I just took some tums and it seemed to help for now.