I echo the other postings - I think you should be fine. It has been plenty of time for the Accutane to work its way out of your system. Make an appt with your doctor to confirm everything is fine thus far. And most importantly, dont worry! Too much stress and anxiety can be harmful for your little one :)
I agree with smjmekg!!! If it has been year I would imagine that it is totally out of your system. For some reassurance just talk to your OB about it and I sure they will tell you the same thing but it is always nice to hear from them too!!!!
Congrats on your pregnancy!
If it's been over a year since you took it, then I doubt it could have any affect on your pregnancy, especially since they only told you to make sure you use 2 types of contraception for only one month after taking it. I'm sure you're fine, and that it won't affect the baby. But I would set up an appointment with your doctor soon so you can start the prenatal care you need.