Suggest Treatment For Migraines.

Hi, I have been suffering with chronic migraine for approx 18 months. I have them frequently and for up to a week. I have just been prescribed beta blockers as a preventative. I also take Rizatriptan. I have recently noticed a dent in my forehead running from the start of my right eyebrow upwards. it is definitely new. this is the side I usually get the most pain. could there be a
connection?
Many thanks
Debbie