I'm REALLY interested to see what replies you'll get to this question! I for one don't have an answer but want to know the answer as much as you! It's a very very good question!!!
If there is anyway you can get an ultrasound from your doctors office I would get one. All I know (physically) is that our uterus should be 'thin' right before/at the beginning of our period. I didn't know this until I started the whole IVF cycle and they check just before you start taking injections at the very beginning of your period to be sure it's thinned out. But an u/s should give you and the doctor an idea of how well your uterus looks before ttc again (making sure there are no adhesiens (sp?) on the uterun wall).
