first loss .... I have some questions and need advice

I was 9 weeks and 5 days before loosing my baby. This was my first loss I have three children was blessed to be with an other child.... but as all of you know some times life has other plans .... I have a few questions.... 
My husband wants to start trying right away .... I'm not sure if I am ready .... how soon is to soon ? 
How long does the cramping and pain last usually before I should be concerned ? Also what is D&C I am am truly sorry your loss ladies i will include you and your families and angels in my prayers. 
Any advice or help .. well I would be very greatful ... I don't know anyone else to ask or who has gone through this before .. 😭💔