gender at 13 weeks 5 days?

Ahine • Cake decorator, stay at home mommy to two and bad ass feminista, and makeup obsessed https://www.facebook.com/thevintagemixerbakery/

I was told by the ultrasound tech that she thinks the baby is boy but they don't want to burst my bubble since I have two boys already, I was wondering if it's too early to tell or could she possibly be right? I already morned the lose of the idea of having a girl and we even picked out a boy name but I'm just worried that once I'm totally settled in my brain about having a boy that 20 week ultrasound it might change.