Mini pill???

I don't think the patch is working for me, I'm nauseated almost all the time and emetrol doesn't help. I think it's the estrogen, so I want to try a bc that doesn't have estrogen. The mini pill is the most effective (other than the iud which is last resort for me) so I wanted to see what you ladies' experiences are with the mini pill! I have a gyno appointment in just over a month so I'm gonna talk to her about it then, but I'm really thinking about switching to the mini pill.