How Bad Do Breast Implants Look After Having a Child?

You wrote, "someone told me the implants don't look as good after pregnancy." I am almost certain that this "someone" was not a doctor, so you can dismiss that comment.
No, pregnancy will not "ruin" your breast implants.
Whether you have implants or not, pregnancy and breastfeeding will do things to your body. When you are pregnant, your body releases more hormones. You will gain weight. The skin will be stretched by the pregnancy weight and lose some elasticity.  After childbirth, your breast will deflate and your skin will be looser.
There are two major unpredictable factors surrounding these changes. First, the DEGREE that these changes (looser skin, deflating breasts) will occur is unpredictable. And second, it is unpredictable whether these changes will warrant a procedure. Therefore, it is impossible to predict whether you will need a lift after pregnancy and breastfeeding. But note that If you already have a breast augmentation, the implants will not affect those factors.
If you want implants now, and can afford them, get implants now. There is no need to wait. 
I hope that answers your question on how implants look after pregnancy. It’s great that you’re doing this research. I always say that the best patients are informed patients.
You might also want to research your options for breast implants. Choosing the right implant is the number one concern among women considering breast augmentation. Did you know, there’s actually a way to select a implant shape, size, and profile that is perfect for you?
A term that I use with my patients for the perfect implant is the “Pony Implant”.
So what do I mean by “perfect”? Well, a Pony Implant has three qualities to it. First, the implant meets your beauty goals. For example, you want to your breasts to look fuller while still appearing natural.
Second, when you chose your Pony Implant, you walk out of your consultation 100% confident that you’ve chosen the right shape and size for you. In other words, you won’t be second guessing your decision, and you won’t be afraid of having gone too big or too small.
And third, after your procedure, you are thrilled with your results, and say, "I’m so happy. This is exactly what I wanted!"
That’s the Pony Implant. And the great news is that there is a simple process to go about finding yours.
This issue of selecting the right implant is so important when it comes to patient satisfaction or dissatisfaction that, again, I really encourage you to learn more about it.
Thank you for reading and best of luck on your journey!

Thank you for the question. Breast implants do not necessarily change after pregnancy. However, your breasts and skin may change. The changes can be related to skin elasticity and the amount of  weight gain/loss around the time of pregnancy. These changes can affect how your breasts look over the top of the implant. Sometime a breast lift may be needed, but it's impossible to know. May woman won't need any surgery after pregnancy.   

The #results of the breast #augmentation may be compromised if it is done before pregnancy. Many women undergo breast procedures to #restore their breasts to the way they looked prior to pregnancy.  Therefore, if you experience weight gain, pregnancies, or any other drastic body altering changes, it is very possible the results may be compromised. 
There is no way of knowing what a #pregnancy will do to the results of an augmentation. Therefore, it is best to wait until after your pregnancy and nursing to undergo an augmentation.