I am 29yrs old and had a tubal ligation and tummy tuck

As far as having a tubal ligation is concerned, your options would be either in vitro or tubal reversal. Many couples opt for reversal, as it is cheaper and is not time consuming like in vitro. If you are under age 40 there is about a 70-80 percent success rate. Conception in this case occurs during the first year after the procedure. If microsurgery was involved in your tubal ligation, there is a slightly higher success rate with about a 90% chance of getting pregnant within a year/ Rates do decline the older you are but still better than in vitro rates. Success rates for in vitro depends on age, along with a number of other factors. Generally it can be as high as 40 percent if you are under 30. This site has further information, including finding a doctor who does reversal
http://www.ihr.com/infertility/provider/tubal_reversal.html
As far as a tummy tuck is concerned, having one does not pose a risk to your baby, but it can change your appearance. If the skin becomes loose again and the muscles stretch out during pregnancy, surgery would have to be done again to improve your appearance.
As far as augmentation is concerned and if you are concerned about breastfeeding, whether breastfeeding is successful depends on the kind of surgery you had. If the incision was made under the fold of the breast or through the armpit, this shouldn't cause any problems. If you had a smile incision around the areola, this puts you at a greater risk for problems. If nerves around the areola were not cut or damaged, you may be able to nurse. If your milk duct system is intact, then this also improves your chances of breastfeeding.