I had 2 m/c in early 2004, with 1 month in between. I didn't want to wait long after the first before trying again. After the second m/c I was told i could try again whenever i felt ready (I had had a d&C), but i was so devastated we took a 6 month break before TTC again.
After the second i had lots of blood tests done (had to see several drs before they would do them - many drs think you should wait til you've had 3 m/c before testing, but my tears won them over in the end). They actually discovered I had an issue with my immune system that may have caused the m/c, but as they didn't test me at the time I m/c'd it was inconclusive. After another year or so of trying I finally fell pg with DD - now 9 months old. I was advised to take low dose aspirin thru that pregnancy just in case the immune problems flared up. This time around i'm doing the same again. I don't want to worry you with my story...my issue is quite rare.
The vast majority of m/c are just choromosomal probs or other issues with the baby. Its very unlikely you did anything wrong. They say that Mother nature is very good at supporting healthy babies and letting the others go....I found that advice completely useless when it was told to me....but it is true.
You may not get any answers to why this happened. My advice is just to wait til you are ready to try again...there is no right or wrong answer. And trying again does not mean you didn't love the baby you lost.
And cry, cry, cry.....all you need. Don't do what i did after my 1st m/c and go into denial. You and your husband need to grieve. Men find it just as hard as women, but they don't know how to deal and they want to be strong for us....so be there for him too.
Lots of girls here understand what you are going thru, we're all here for you.
Good luck, and best wishes