Going by that date alone of June 28th, that does put you at around 6 weeks. Actually to be more exact 5 weeks, 4 days. With an estimated conception date of 07/12/2007
The standard method of calculating your due date is to add 280 days to the fist day of your last menstrual period, or LMP.
Going back to June, it doesn't mean you were pregnant at that time, as you only start counting from that date. As using that date, then your estimated conception date is 07/12/2007.
However, an ultra sound will give much better idea of what is going on. So hopefully that does get scheduled soon.
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