A doctor recently told me ok to take imitrix during pregnancy. I thought that sounded insane. Neurologists? Obgyn? Specialists? Thoughts?

Use alternatives. Imitrex (sumatriptan) works by activating the vascular serotonin 5-ht1 receptors, producing vasoconstriction. It's a cat "c" drug that has been shown to cause fetal effects in animal studies. I prefer to use analgesics such as fiorcet +/- codiene or other narcotics, short term as needed. Imitrex (sumatriptan) should be avoided in pregnancy because of its fetal & placental effects with vessel constriction.
Use caution. "insane" is a bit strong. There is simply not enough information available to draw conclusions although what information we have is reassuring. Theoretical risks are higher the first trimester but there is no data. Knowing how devastating a migraine can be, i think Imitrex (sumatriptan) or related medications have a role as a treatment of last resort.
Imitrex (sumatriptan) Imitrex (sumatriptan) and all triptan drugs are contraindicated in pregnancy. They can effect placental blood supply.