Pregnancy Migraines

Someone please help! I suffer from chronic severe migraines and being pregnant I am super short on what I can take to treat them. Obviously I know sudafed and Tylenol are safe. I also rub peppermint oil on my head and use cold compresses as needed. I also try and take steamy showers when possible to try and open up my head. I have an almost 3 year old so laying in the dark until it passes is basically impossible unless it is naptime.