K, I'm confused, and maybe I need to reread an earlier post. How did you conceive? Were you on fertility drugs? Did you do a trigger shot? If so, then your RE's clinic should know exactly when you O'd...???
I agree with Mrs A, RE's will get testy when talking about cm, mittleschmerz, even some get annoyed by BBT! They like to see follicle growth, follicle rupture, and have everything charted. So I don't know how you and your Dr got off by a week?
Either way, if you know you didn't BD the week before, then you are obviously 4.5 weeks pregnant and what he's seeing is probably normal. I had an u/s with one of my pregnancies at 4 weeks and they couldn't see anything, not a dot, nothing. It ended up being twins actually! So yeah, I guess I would just wait 2 more weeks until you u/s with your OB and go from there.
If I were you, I would write a letter to your RE's office about his lack of listening to you on this day and how upset you were by the whole thing. IF is hard enough, do we really have to deal with crummy RE's too???