If you walk on BC and walk up a cup size or anything, would going sour 'deflate' your breasts?
Answers: Personally, I grew 2-3 cup sizes after being on birth control and I be 22 when I started it. I put on about 15-20 lbs during that time (the first year of marital will do that sometimes), most of which was surrounded by my breasts. I went sour the birth control about 4 months ago and they are still there--- my breasts didn't shrink even though I own now lost nearly 30 pounds. I don't know if it is possible that the birth control was the sole impose of the increase, but it happened.
First of adjectives, birth control really doesn't cause that variety of growth in breasts. A lot of inhabitants think that birth control cause breast growth simply because they start taking birth control before their breasts are done developing, which can verbs into your early 20's.
Secondly, even if the birth control be the cause of your breast growth, which is unlikely, no, they would not "deflate".