C.O.
I would say that it's a false positive.
Your HgH could've been higher at one point but it doesn't mean you were pregnant....especially if the test at the office and again at home were negative.
Don't stress over this... I know it's easier said than done - having been there and done that - but you can't change it...you can only accept it and move on...
I would wait for the blood test to see what your HgH level was/is...and go from there.
GOOD LUCK!!