Suggest Risk Of Pregnancy With Fits Disorder

Doctor i am suffering from fits when i was six months old till date, I am taking Tegrital 200 gms tablets evryday one morning and evening i last got my attcack in Feb last month, I have done my blood test and my doctor says that my test is good only I have to continue throughout my life the tablets and take proper care. I really dont know when this will stop ar will have problems during my pregnancy or will i get any side effects further due to tablets