From what I've been told now - and I don't know how far along you were - I'd say there's nothing you can do except wait, it can understandably take a while for your hormones to go back to normal enough to have a regular cycle again. If you've done a HPT and it was negative then I think you just wait... sorry I couldn't be more help.
I had a very early loss (4w 5d) mid-Dec and my last period was nearly a week late so if you were further along I guess it could take even longer for it to return.