Postpartum nausea?

Justice • son born 12-9-16👦 missed miscarriage 7-12-17 at 10 weeks👼 blighted ovum 2-5-18👼baby girl born 11-25-18👧
Hey ladies im 6 weeks postpartum and have been experiencing nausea for the past few weeks. Did anyone else have this? I'm on jencycla for birth control and I wonder if maybe that is what's causing it?