29 Years Old, Breastfed 2 Kids, Looking for More Volume! - Seattle, WA

I have read a lot of other women's stories on this site and felt the need to share my experience and also ask for support as I am very nervous about this decision. I have wanted larger breasts for as long as I can remember- they are so feminine! Over the last ten years I have had much larger breasts due to weight fluctuation (At one point i weighed 20 lbs more and easily over-filled a C cup bra), pregnancy and breast feeding. During these times I absolutely loved my breasts and felt so confident and hot. Even with a larger tummy/thighs I felt great! So I don't have any sad stories or real reason for wanting them other than I would like more volume. I do like my current breasts- they have served me well. One of them is a full A and the other a medium B (some asymmetry that honestly doesn't bother me much). I did have a consult a couple of weeks ago and tried on sizers- I would like a "natural but blessed" look so the doctor recommended me not going any higher than the 339 cc- Natrelle silicone smooth under the muscle, under the breast procedure. Honestly as I right this I can't believe I'm actually doing this and am wondering if I should be feeling this sick to my stomach. I have thought about it forever, researched it forever and do want them- I'm just worried about if I'll be perceived as "fake boobs" everywhere I go or if I'll develop some autoimmune disease I've read about that doesn't seem to have any evidence but still it is scary. I guess in the end I am just going for it and hoping for the best. I have read so many women's experience where they loved their results and are happy that they did it so that is what I am hoping for. I have a close friend who did it with the same doctor and loves hers too. Did/Does anybody have as many doubts/concerns as I do with a surgery date? AH!