Please do have a cry and let yourself wallow. At least for a little while. I know you will be desperate to get back what you lost as quickly as possibly, as that is how I felt. I also went through stages of feeling hopeful and determined, to feeling panicky, to feeling distraught. Wonderful posters, like English, we're a great source of comfort. I hope we can be to you too.
As English said, count this as CD1 but really, you don't know when your HCG levels will drop and until then, you won't ovulate. You may go back to normal in terms of when you ovulate, plenty do. You may even be super fertile now and conceive straight away. You might not. I'm still waiting to ovulate and I miscarried end of Feb. Because of this, you will be on an emotional rollercoaster so you need to give yourself some tlc. Tonight, get yourself some hot chocolate, maybe a warm bubble bath and snuggle up to DH. A big virtual hug tooth