Questions!! Please help answer

Sarah • Baby boy, Amir born April 20th❤️ w/two stepsons😘

Hello I’m trying for my first baby. It would be my husband’s third. He’s had two previously.

—Should I have any issues with him having fertility problems due to him being 41yrs old? I am younger(age gap)

Also I’ve been on birth control for 4yrs and got off in the beginning of December 2018.

—How long did it take other woman getting of birth control that were on it for awhile??

Thank you for your time!