When do you start buying stroller and carrier?

For carrier, can see see research but there's shop that allows you to try with baby before purchasing. So after baby is born, bring baby down to try together and see if baby comfortable with it. Stroller maybe can start looking n buy end 2nd tri or early 3rd tri? Do note that if you have car or going to take Grab to polyclinic for checks, need baby car seat ya. If not you can carry in arms and take Comfort Taxi.