Tonilynn, I recommend you see Dr. James Suen at UAMS, who specializes in head and neck AVMs. UAMS is hosting the fourth international symposium for vascular anomalies of the head and neck this month. Dr. Suen is an amazing doctor; patients come from all over the world to see him. And, yes, you must not get pregnant until the AVM is under control. Dr. Suen's team has discovered progesterone receptors on avms that cause them to progress and expand during pregnancy.
At avmsurvivors.org, there is a Pregnancy and AVMs group that may be useful to you. Best wishes!