Anatomy Scan

Jenna
How far was everyone when they their anatomy scan? I was hoping to have a small gender reveal party on Fourth of July weekend but I need to schedule my anatomy scan for a little earlier than 20 weeks. I will be 20 weeks on July 2 but I was really hoping to have the scan earlier so we could plan the party. Obviously making sure I'm far enough along for the doctor to get the information they need for the scan is my number one priority and I'm just not sure what's too early. My doctor said anytime between 18 and 22 weeks was OK but I'm worried about having it done too early! Any advice or insight would be greatly appreciated!