I Am a Male and I Want to Get on Accutane/roaccutane, Can I Still Try for a Baby with my Girlfriend Whilst on the Medication?

im a 21 year old male from the uk. i am wanting to get on to a course of accutane/roaccutane. my question is that i am trying for a baby with my girlfriend and i want to know will i have to stop trying for a baby if i go on this medication? i suppose what im trying to say is the seman dangerous to my girlfriend if i am on the drug and would it effect our baby?