Can't have a baby normally 😢

So I just found out that I can't ever push a baby out. I don't have the frame and my muscles aren't strong enough. So I they gave me a c section. 3 years later. I am pregnant again. Me and my fiancé are happy but when I go to the dr. Same thing. I can't have a natural birth. 😢 I will always have to get cut. Is there a limit of kids I can have with a c section? We only want 3. This is baby number two. Someone told me u can't have past 4. So I got a little scared. Like what if we have 4 kids and I have another baby. Unplanned?Â