Has anyone else been having issues finding the right birth control?

This is my fifth time that I had to changed it first it was the nexplalon, then four different birth control pills. The last time I had to change it was two weeks ago due to migraines, nausea and other crap, now it’s my migraines and constant bleeding. I had my second child 7 months ago, I’ve been trying to lose weight but I also need to put myself back on birth control before my husband comes home from deployment ( I was off of it for two months). I’m not sure what to do or if it’s just my body changing on me ( my fourth time changing my birth control I was fine for a month then I had gotten servilely sick).