TL;DR I started taking Affexor two days ago at 75mg. and are experiencing pretty harsh migraines.

A little history: I have been taking 150MG. of Sertraline for many years now and my doctor wants me to "ween" off sertraline and start Affexor. She has me taking 100mg of sertraline for 3 days, 50mg for two days and than off it completely. While slowly coming off Sertraline she has me taking 75mg of affexor in the morning and the past two days I've had pretty harsh migraines. I take Doxepin for Migraines currently and am wondering if this is normal side affect for starting Affexor? My doctor told me it was and not to worry but being a "hypocondriac" I think I'm dying would love some help.