S.H.
Hi Maria! I personally only have 2, but one of my closest friends has 7. The range from 16-4. She has said that after the 3rd it was never any harder to lose the weight. She, although, is about 100 pounds soak and wet. I have another who is pregnant with her 4th right now, and she never lost the weight of the 3rd one, and if she did, it was a very small amount. Every woman is different. If that is the only thing stopping you, I'd just stick myself to a strict diet while preggers, and do what I could to continue exercising during the pregnancy. Hope this helps!
S.