Congratulations!
Please please read up on the boutique ultrasounds before doing one.... I'm not trying to be a jerk, but they can be dangerous for your child.
I'm not a fan of it, but there is a blood test you can ask your Dr. about that can tell gender early, it's intended to look for chromosome irregularities, but it can get gender by 10-12 weeks if I recall correctly. Might be cheaper too.