Honestly I have read through the thread. What do you want from us? Yes, what the dr said is a little ridiculous.
Do you truly believe you are pregnant? Have you said this to your DH and kids? Are you planning on doing anything?
Just saying 'meh' will not make it go away or 'I'll just see if a baby pops out' is not a good plan.
I also think any pelvic scan would show a baby. Especially at the gestation you believe you are to be.
So I will echo everyone else. Go to the ED. Get more tests done. Just sitting around doing nothing is not a solution.