chronic migraine suffer and pregnant

I've had suffered from chronic migraines for 6 years now and they have progressively gotten worse and worse to the point of me being on disability. Me and my fiancé just found out we were pregnant and we are so excited!!! Since I'm on a laundry list of medication and Botox... I have to cut off my meds cold turkey and I'm so scared of what pain I'm going to be in... anyone have a similar situation?