I'm really sorry to hear about your m/c. If you feel up to it, there is no reason to wait around* - as others have said, the only issue can be pinpointing OV, dating, etc, although your first scan will be able to sort the date out no worries.
I had a 2nd m/c at around 5-6 weeks, conceived the cycle of my m/c (I was using OPKs) and my 5 month old is fast asleep in his bedroom as we speak.

In fact, there is one school of thought that says you can be extra fertile after a m/c, although this may just be an old wives' tale. Myself - I figured no harm trying, since we felt emotionally ready. Lucky thing we went for it!
*I only have experience of early m/c - I think they may advocate waiting a bit if you had medical management for a later m/c, but I don't think this applies to you, right?