J.C.
First of all, I'm sorry that your mom is talking to you about tummy tucks when you're going through a pregnancy. I mean, it's not like we all don't worry enough about the changes in our body while we're pregnant, right?
I'm 29 years old, had my first child at 26 and my second, when my first was 15 months old. So, totally back to back. I gained almost 50 pounds with my first and then 27 with my second. I don't know what your body type is like, but I am 5'4" and when I first got pregnant I weighed about 115. Anyway, the reason I'm telling you this is because being a small girl, I gained 50 pounds and did not get a single stretch mark. I have no extra skin at all. So, for you to worry about what you might need to have done after your baby, while you're still pregnant, is totally jumping the gun. You can't even tell that I had any babies. Even if you could tell though, unless your mom is planning on paying for that tummy tuck, you'll find that there are many many other more important things to spend that money on. I used to think that I wanted a boob job, but a couple of years ago I realized that there are more important things than worrying about me having small boobs. I have small B's and when I was pregnant and breastfeeding I was busting out of a D. So, don't worry about that stuff now, just enjoy being pregnant. That other stuff isn't important.