I had my first at 31 and my 2nd at 33. We both kids, I got pregnant the same month that we decided to start trying (My DH and I joke that all we have to do to make a baby is say "wouldn't it be nice to have a baby?" and then pass in the hallway
). There were complications with both births, and although I wanted natural childbirth, I had 2 c-sections.
There are no guarentees about anything. Some women conceive very easily, and some don't. Some women have easy pregnancies and some don't. Some women have easy births, and some don't. Some women breastfeed easily, and some find it very hard to get started. It all was easy for me except for the actual birth. And honestly, watching the absolute hell that women go through who have fertility problems or are prone to miscarrages, and I feel very lucky and blessed.
I think it if you talking about the difference between having a child at 27 and having one at 30, how your particular body works is the biggest factor in how it will all go though. The 3 years won't make much of a difference. As far as your 2nd child goes, the way the birth of the first one goes is the biggest determining factor. My sis had her 3rd and last child at 38 and had a very very easy birth -- she was in labor 3 hours and the baby just popped out. It was the same as her first 2 births, but the labor time became shorter with each child.