Weird Symptom of Prenatals

I started taking prenatals on Saturday and I noticed a weird increase in my appetite. It's like I'm constantly hungry and after I eat a meal my stomach is growling like 30 minutes later. I'm still on the mini pill and have 2 more weeks til I'll be done with my pill pack and will completely come off birth control to start trying. Didn't know if anyone else had weird symptoms on prenatals? I'm taking the Nature Made prenatals with DHA.