Some women choose to have breast reduction, before they complete their families because they are inconvenienced by the weight of their breasts. Although it's a medium sized surgery, the relief of musculoskeletal, in particular shoulder strap, pain is almost immediate. Also the reduced breast volume has less tendency to leave moisture at the bra strap. So it's very much a trade off of scars for improved symptoms and hopefully a better aesthetic outcome. Women rightfully worry about loss of erogenous sensation around the nipples as well as the ability to lactate. A carefully planned and executed breast reduction should preserve both of these functions. With respect to the timing of getting pregnant, I would specify at least 6 months, to allow the patient some time to convalesce from the surgery, before subjecting the breasts to the hormonal changes of pregnancy. However this recommendation should really be taken in conjunction with a woman's partner and OB.