Getting off medicine to conceive

Anyone have to go off their regular medication to conceive? My Ob/GYN told me today that I will need to come off my two seizure medications. Of course I wouldn't want to put my unborn at risk. However, I don't want to risk myself for 10 mos either. I get very ill from Migraines and seizures and I can't imagine life without these meds. Hmmmm what to do!?