Travel system vs. ??

Meredith • Mother to my rainbow baby girl 10/21/16 and 1 on the way due 1/4/19 🌈🌈
I am so confused about what to do about car seat/stroller. Right now we are registered for a car seat/stroller "travel system" but it is my understanding the car seat portion is mostly just for young infants... So does that mean we'd have to buy something else in a few months? This is what I'm currently registered for. Thanks for advice/comments!