How many kids u have already?
Since pregnant already - keep it. Later during birth - if through C-Section surgery ask them to 'ikat' the 'peranakan'. (Bilateral tubal ligation)
ie: tutup kilang. (no more preggy)

then after this you piap wifuuuu can panzhuut-zhut-zhut all you want inside - also no problem.

if birth via normal vaginal delivery - then immediately before discharge - ask for appointment for to 'ikat'. Your wifuu will have to come again some other day to do the procedure.

yup. I saw in XHS people actually went for vasectomy+sunat at the same time. done in 1 hour.