Gender at 14 weeks?

Was anyone able to find out their baby's sex at 14 weeks? My husband is going to be gone from 15 weeks to at least 20 weeks and I don't want to find out without him but know I'll have an ultrasound while he's gone. I looked into an elective 3d place that offers gender determination starting at 14 weeks. I'd be 14w5d for the appt, is that giving us a decent chance to be able to see anything? Or should we just wait till after 20 weeks for the one at my drs?