I am so sorry for your loss, it is so hard to know when the right time is but you will know. Take the time to grieve your little one, we have included them in the family and where we have a scan photo they have 'gone in with their brothers'.
I secretly desperately want to try again, but DH is not happy about it

I am also scared that I will lose another one before I have even got used to having them, I suppose that it is a risk you take when you are ready.

When I had my first m/c last year, I was an inconsolable mess and just went with it, I cry loads when I am on my own for all the babies that have gone, but it does get easier.
Be good to yourself.
I now have a beautiful baby ring' that is always with me, I am now searching for another so that they are always with me. Whenever I miss him I touch the ring, silly but it helps.

Sending you lots of love and hugs