http://www.erbook.net/accutane.htm
AccutaneŽ (isotretinoin) can permanently affect your sex life, reducing libido and sexual sensation. In some cases it may also induce sexual dysesthesias in which sexual sensations feel like "pins and needles" instead of being normally pleasant.
Doing more research on Accutane, it's a depressant, that combined with the birth control you are on (does the doctor who presribed the Accutane know about the bc you are using, and does the doctor who prescribed the bc, know about the accutane. That combination of medicines, is bound to screw up anyone's system.
You might want to have a chat with the doctor who prescribed the Accutane...
http://www.fda.gov/cder/drug/infopag...ant%20warnings