The Uterus

One of the biggest things that ultrasound will be looking for is the shape of the uterus. I have included some ultrasound images of a normal uterus:

http://www.advancedfertility.com/uterus.htm

http://www.advancedfertility.com/uterinefibroid.htm

http://www.gehealthcare.com/usen/ultrasound/education/products/cme_uterus.html

Ultrasounds of Abnormal uterus's:

This is a Subseptate Uterus

http://www.gehealthcare.com/usen/ultrasound/education/products/cme_uterus.html

This is a Uterus with a very big fibroid attached to it.

http://www.advancedfertility.com/uterinefibroid.htm

These are a little extreme but I think it helps to see what is extreme so that you can have something to measure against. Also it helps to see what is normal before going so that if it look similar, unless told otherwise, you won't have anything to worry about.