Birth control making me sick?

I just started taking bc for the first time ever (I'm taking Mylan) about 5 days ago and the last 3 days I feel nauseous and I'm not that hungry. I have also lost some weight because I haven't been eating much. Before I started taking it I asked my doctor and she said my stomach might be a little upset. But I feel sick all the time and don't want to eat. I'm just wondering if anyone one else has had this problem and if anyone has any suggestions on natural or something I can make at home to help my stomach