I had an ultrasound before starting meds to make sure I didn't have a cyst (because I did a few cycles before) - I don't know if this is standard or just because I had a previous cyst. During the DE cycle I had only 1 ultrasound - measured my lining and checked for the triple stripe pattern. It was all good, so I didn't have anymore ultrasounds. Sounds like you had everything checked out and it looks good - I wouldn't worry! Good luck!