Something isn't quite right there... dogs go through false pregnancy, if they're going to have a false pregnancy, AFTER their heat cycle (about 8-10 weeks after, when a litter would be due from said heat cycle). Unless I am misreading what you've written, you seem to be saying that she's had a false pregnancy but you expect her heat cycle to come a couple of weeks after? Not going to happen

If it was indeed a false pregnancy, her heat cycle has been and gone.
In that case, now is a very good time to have her spayed. Bitches that have false pregnancies have them because of hormonal abnormalities that mean they fail to come out of their heats normally. It's not that nice for the dog, and if she has that sort of abnormality, then she may suffer the same hormonal rollercoaster after every heat cycle.