How soon after AVM removal should we feel safe to get pregnant?

Im 28 yrs old and had a stroke on Oct5/11 and craniotomy on Oct31/11. It has been 4 months and I feel great. We are hoping to start trying for a babe in May or June. I have not had any seizures but am to keep taking dilantin until May 1. This will be 6 months after surgery. Neurologist wanted me on it for at 1-2 years to be safe. Is this realistic if I havent had seizures? Has anyone gotten pregnant that soon after excision? And what was it like weaning off dilantin. My dose is 225mg at bedtime. Is this alot? Im not sure what other peoples doses are of this drug. I guess Im looking for ANY info about weaning and pregnancy! Thanks