Can using to much plan b cause infertility?

No: Using too much Plan B won't cause infertility. Its not a great idea to use it multiple times in one month; however, because it may not be as effective the second and third time. Its intended for an occasional emergency. If you are needing often, its best to get on a regular birth control pill.

Agree w Dr. Whiting: Although using Plan B more than once will not cause infertility, it is designed only to be used an emergency form of contraception when another form of birth control has failed.

No.: Plan B or any type of contraception will not impact your fertility. These drugs are safe and will not prevent you from or reduce your chances of getting pregnant.