Hi Faeriebaby, nice to meet you :-D
I am 21 and 4 months pregnant with my second child (I lost the first one to miscarriage). My husband and I have been married since my 18th birthday, and we started our own home-business with the express purpose of being able to afford to start having kids early, so we'd still be young when they were teens. We're also planning to have lots of kids, so I figured the earlier to start the better

I really don't think there is a certain "age" like "oh, you're 26-33 you'd better have kids NOW!". I think it is all about when you're ready, emotionally, physically, spiritually, etc.
I have a friend who has been married for 15 years, she's in her late 30s, but she has always been a real party animal, and even now, she is not ready to settle down and have a responsibility like a child. She may never get there (she's the type of gal who wishes she was a teen in the 70s so she could be a real hippie).
So, I think it depends on where you're at. Not how old you are.