I had an ERPC (which I think is a vacuum version of a D&C) on 4th Jan, and amazingly they didn't give me any advice re. TTC when I was discharged! But I'd had a miscarriage the previous May, so I knew it was best to wait till I'd had a period first, just for dating purposes.
But I still kept getting a + HPT until after my first post-ERPC period (which luckily came bang on time a month later), and it was rather an odd period (sorry if TMI, but there were definitely some tissue-like lumps). Because it was weird like this, I decided to wait another cycle to get back to normal before TTC. Imagine my shock when it worked first time! ERPC 4th Jan, then LMP 13th March, BFP on 6th April at just 9dpo...
I have heard that in the 6 months after a miscarriage there's an increased chance of a pregnancy having a positive outcome because your body is already 'primed' (I read some obscure Scottish medical study I found online), and I've been told by GPs that you're also more fertile... Good luck everyone XXX