Birth control causing vomiting

I’m 8 weeks pp and just started taking birth control again yesterday. So far I’ve puked three (make that four) times in a two hour time frame. I’m not breastfeeding so I am taking the jolessa pill that I took before I got pregnant. I know you can have side effects after having a baby even if you didn’t have them before but omg I don’t think I can handle puking my brains out all day. Did anyone else go through this? I also have a mild headache.