Hi Stephanie, my doctors told me it would "probably" be safe, but for me, "probably" isn't really certain enough. I guess I'm lucky having children has never been much of a priority for me, so making the decision not to push my luck wasn't an issue.
I do know women with TOF who have successfully had children and pretty much all of them have been followed by a specialist OB/GYN and of course their cardiologist. Lyn's link to the ACHA board is correct and you will find a lot more women in your position there.
Just bear in mind, however, that you will only hear the success stories. The women who have had TOF and not survived pregnancy/childbirth are not there to tell their stories, so please remember that when you are making this decision for yourself. I don't say that to be negative, but to put perspective into the situation. It can be very easy to forget the potential complications and seriousness when the only stories you hear are those with happy endings.
Of course, you have to do what is right for YOU and I hope you have a qualified, supportive team to help guide you through the process.