Sex after miscarriage

I had a miscarriage a week ago at 4 1/2 weeks. I stopped bleeding last night and I am wondering, when can We have sex again? The day of miscarriage my hcg levels were a 2, I took a hcg test to see if I had any pregnancy hormones and it was negative.

When can I start ttc ? My husband and I have talked and are ready to start again.

(I will never forget my pregnancy even though it was short, we have been ttc for 6 months before our loss, no negative comments please)