Introducing food

Jaclyn
My lo is 3 months now, and definitely just went through an 11 week growth spurt, but now 2 weeks later still has a crazy hunger. I'm exclusively breast feeding him, and he hasn't seemed satisfied.. He will scream bloody murder when he's hungry.. And nurses for about 40 minutes. I know he's getting enough because he's huge!! Hahah
Is it time to introduce food? I'm going to call his pediatrician tomorrow.. I gave him some mashed banana today and he swallowed it perfectly.. I keep reading I shouldn't be.. Just look how big he is!! Haha.. My friends baby who is 1 year old is only 1 lb heavier!!