Extreme Migraine ! Help!!

Samantha • 2 year old son- December 2012. Angel baby in heaven due to trisomy 13- May 2015. Pregnant with our rainbow due May 2016.
I have a history of migraines but since becoming pregnant I haven't been able to see my migraine specialist. I know the medicines I am currently prescribed I can not take while pregnant so I took 2 extra strength tylenol. It's not touching this migraine. Anyone have the same experience or now something different I can take.