Breast Pumps

Has anyone ever used a breast pump? If you continue to use it, will you grow breasts to a small degree? I used my wife's this weekend, and my breasts are tender and sore. The nipples are standing out, but not overly excited looking. I did enjoy the experience but want more. Anyone know for sure if it will help increase the bust size? Or what it will do in the long run?

I used those little flesh colored O-rings on my nipples , I started with one and ended with four stacked, the results are longer, thicker nipples that are very noticable when I wear a Tshirt. I havent worn them in 2 years and my nipples still stand out. Whats really interesting is the number of women who notice them, I had a pretty coworker ask to see my nipples once and ended up biting and sucking on them in a bar and my wife always bites them while she is screwing me with a strap on.