Martina - no I had an internal. Couldnt really see much except the outline of the bub (more like a white shadow) and also the heartbeat which looked just like a tiny flickering light.
Just seeing the sac as soon as the probe thingy went in was enough for me!! I remember having 3 scans for my ectopic and they were searching everywhere to find an embryo - it was torcher.
Try not to stress - im sure all will go well and after tomorrow you can tick one box and try to relax a little more. I had the first good nights sleep since Id known I was pregnant the night after the scan.
Cant wait to hear how it went xoxo