Dilemma... Should I find out the Gender!?

I am 19wks and have said from day 1 we would wait and be surprised this time! Well It's now starting to make me a little anxious between pregnant friends finding out, baby name discussions with the hubby, and with my anatomy scan coming up...I am wondering if I should just find out, or maybe just have them give us and envelope in case we change our mind...or just stick it out!? What are your thoughts? 
Below is my 12 wk ultrasound...there are so many theories - any guesses what you think I'm having?