Anatomy scan

So we got our letter last week for our anatomy scan. It's going to be March 2nd. It's going to be a longgggg month! I'm so scared that they won't be able to see anything as I really want to plan everything accordingly ( room, clothes etc..) my fiance on the other hand wouldn't mind not knowing because he already has a child and got to find out the sexe with him. Any other momma's feeling anxious and scared that they won't be able to find out?!? We also have no private clinics here who do ultrasounds so if I didn't find out on March 2nd I would have to drive 3 hours to a different city to get the 3D which i'm not too keen about the idea.