Thanks for the query. Isotretinoin is a wonder drug for acne treatment if it is handled properly. There are many instructions to be followed if you are considering isotretinoin or are on isotretinoin for acne. It is a teratogenic drug and can cause foetal damage. The washout period for the drug is minimum of 2-3 months following which one can considered conception. Discuss more with a Dermatologist.
Further authentic information can be sought from https://www.aad.org/public/diseases/acne-and-rosacea/isotretinoin-treatment-for-severe-acne