Anything I can do?

I just lost my baby at 9 weeks this past Monday and had a d&c in the very early morning hours on Tuesday. My dr said we can start trying again in 2 weeks, but it would be easier to date the pregnancy if I waited for my cycle to return. I had planned to wait for my first cycle anyway because I wanted to make sure everything was healed properly. Is there anything I can do to help prepare my body to get pregnant again? I had a d&c back in 2011 and I know I waited 3 months to start trying again and got pregnant right away, but this time around time is not really my friend as I will be 39 in April. I’m just concerned about another miscarriage if I get pregnant too soon and didn’t know if there was anything I could do to help my body.