Had the scan today and all was good. Mini is very active and was wriggling about all over the place, kicking, waving and we even saw an enormous yawn!! Will try to put a pic on the FB page.
I had to have a full bladder for the scan and here is what I found online
"This can vary a bit from site to site but, in general, early ultrasounds - prior to 20 to 24 weeks or so - do require a full bladder when the transabdominal approach (transducer is placed on your abdomen) is used.
The reason for this is that the fluid in the bladder creates a "window" for the beam to pass through. (This provides a good medium for sound conduction.) It also serves as a "landmark" for the technician to get their bearings, so to speak. In addition, a full bladder can change the position of the uterus, taking the flexion out of it and pushing it up so it is easier to scan. A full bladder also moves loops of bowel up and out of the way to make the pelvic organs easier to view.
In later pregnancy, or with a transvaginal approach, (the probe is introduced into the vagina), a full bladder is not necessary. The enlarging uterus is quite nicely positioned above the pubic bone and the fluid within the sac provides the medium for passage of the beam."
I guess opinion varies but it was in my letter that I needed one. As someone earlier said, better to have one and be able to empty it rather than turn up without and have to delay the appointment to fill it up!!