[charrr]

Well, many & different things work for people in varying degrees. I don't know if you have looked at sweetyalyssa's massage only thread. That is one massage I would definitely recommend. She talks about massage as cumulative. The more one does it, the better the results. It may be true that it seems swelling goes away, but it seem that a lot of people "measure" incorrectly and count too much on the measuring tape or look themselves in the nipple without noticing that they have 2 entire boobs! One girl on the forum was disappointed and complaining with her growth after a month. Her pictures showed obvious progress! It was infuriating! Hehehe.
-Even with light massaging, the rib cage/torso may shrink a little. Massage is a form of workout.
-Breast may tend to become more full (denser) as cells squeeze in before skin is stretched enough and tissue expands outward.
-A lot of women retain more fluids around menstrual time. I cannot even really wear some of my pants. My boobs fill up my bra more. This can be for two weeks.
-As several people have mentioned in the threads with several different methods, the growth may start with more "swelling" at certain times (at first) and then, it's a little more and more (a little more stays every time) and there are sometimes growth spurts as the skin expands and the cells stretch their legs more.
-You are possibly looking for expansion in the very center of the boob. There is some there, as far as I can tell from what you write. But also check underboob, overboob, sideboob. I was very impressed to notice the shape of my boobs have changed- but thankfully they didn't just expand forward and become pointier! They are more round and full, so I don't mind that the tape doesn't show two long boobs. Hahaha!