recently diagnosed

Hello, I was recently diagnosed with migraine and am so thankful to have found this website.  I have been dealing with what I thought was sinus headaches and infections for the past 15 years with the last 3 years being extremely bad.  I went to several ENT doctors who all said that my headaches were caused by allergies and sinus infections.  This past year was the worst, I had almost constant sinus pain and many rounds of antibiotics which did not help at all.  Finally I went to another ENT doctor who told me I could be having migraines.  I had a CT scan done of my sinuses and the results were completely normal so he referred me to a neurologist who diagnosed me with migraines.  I was completely shocked to learn that there is a type of migraine that can feel like a sinus infection and its discouraging to know that I have been misdiagnosed for such a long time.  The neurologist prescribed amitryptaline as a preventive and Frova to take when I get a headache.  I've been on the amitryptaline for about 7 weeks, and I'm some better but I'm still having headaches, nausea, and dizziness about 3-4 days of each week.  I know I need to be patient, but after 15 years of not knowing why I felt so bad all the time, I wish I could feel better sooner.  I've been reading other shareposts and realize that it may take a while to find the right combination of medications.