What's to young to ttc?!

Savannah
I'm 24 and my husband is 27 we've been married for two years and just bought our first house this summer. We both have great jobs I'm a nurse and he's an electrician. 
We've been getting some nasty comments about trying to convince from his mom saying I'm too young and she won't be supportive. I don't see anything wrong with having a baby now! But of course I want her to be supportive of it when it does happen!
What do you guys think? 
How young were you when you had your first?