ive noticed three weeks before I'm due for my next Botox injections I start to get migraines, nothing compared to what I used to get before but I have to use my Maxalt. This month has noticed it has been bad I don't know if it is because of the weather change, I live in Syracuse NY, for the last three weeks I wake up every morning with a terrible migraine or sinus migraine. I get my next Botox injection next week. Does the Botox wear off at some point or should I ask them to up my injections?