Is 18 too young?

So a few days ago me(18) and my bf(22) had sex and he accidentally came in me, I'm pretty sure I was ovulating or very fertile because my CM was raw egg like. We just laughed it off and I asked if he wanted me to get a plan B pill, he said not to worry and we will see what happens. 
I'm not sure if I'm even pregnant or not but we are both pretty ready to have a baby if it happens, do you think our age will make it difficult? 
We both work and are pretty financially stable. Tell me your stories on young pregnancies❤️