I just sent in my very first submission. It's a poem called, The Horizon, and I sent it to GUD: Greatest Uncommon Denominator. So I'll probably be recieving by very first rejection in about ten days to a month.
OoOoOOO exciting! Good luck and let us all know how it goes I'm dreading the day i send anything off to the scary serious people O.O
Gets of luck. And if it is rejected, see what you can do to improve it, and send out more submissions.
GUD is really hard to get accepted with, so don't get upset if they do reject your submission. Good luck though and honestly, it is great to hear that you have begun submitting to publishers. Don't stop now!!!