This is a question you need to discuss very carefully with your doctors. The doctor who treats you for Migraines and your OB/GYN need to consult about what meds you should take while trying to get pregnant and while your are pregnant.

Here's some information from the Topamax prescribing information:

"There are no studies using TOPAMAX® in pregnant women. TOPAMAX® should be used during pregnancy only if the potential benefit outweighs the potential risk to the fetus. In post-marketing experience, cases of hypospadias have been reported in male infants exposed in utero to topiramate, with or without other anticonvulsants; however, a causal relationship with topiramate has not been established."

"What Should I Do If I Get Pregnant While Taking TOPAMAX?
It is not clear if there is a risk to the fetus/baby if you are exposed to TOPAMAX and you are pregnant. Various abnormalities have been described in the offspring of animals exposed to TOPAMAX during pregnancy. If you use TOPAMAX while you are pregnant, ask your healthcare professional about reporting your experience to the North American Drug Pregnancy Registry at Massachusetts General Hospital (Boston, MA). This registry collects information about the babies born to women who are taking drugs to treat various conditions. Information about the North American Drug Pregnancy Registry can be found at http://www.massgeneral.org/aed/. You can also join the registry by calling 1-877-376-3872."

Good luck,

Teri

While researching the medication I learned that if you take 200 mg or more your birth control is no longer an effective method of contraceptive. I never let my doctor put me on more than 150 mg because that made me very wary of the medication.

haha sorry misread your question. I thought you were asking if you were at risk of getting pregnant.

That is a dificult question to answer...I was on Topamax (400mg a day) before, during and after my pregnancy...And my daughter is now 4 years old.  We have never had any problems with her health at all until this past week when they found small amounts of blood in her urine which may be a bladder infection...me being worried because I was on Topamax while pregnant, I started searching on here to see if anyone has had similar problems....I would rather worry and be wrong than not worry and be shocked with bad news!!! So I guess we will see what the ultra sound shows tomorrow!!  Back to your question...if you do happen to get pregnant and stay on topamax...I hope you have the same type of doctors I did...I had an ultra sound at least once a month...sometimes once a week..depending on the stage of pregnancy to make sure my daughter was developing correctly...I had one doctor visit a week with my regular ob/gyn a visit every couple of weeks with primary doctor and a visit once a month with my neurologoist.  I wish you the best of luck!!!!