How long after a miscarriage is it ok to try again ?

A friend of mine has just had a miscarriage of a much wanted pregnancy and it set me to thinking about miscarriage, and how long we need to wait before trying again.

 Miscarriage is more common than many people think. When you start to talk to friends you find out that many of them have had this sad experience.

My personal feelings are that I would need to grieve the loss of the baby & give my body  time to get back to its normal pre pregnant state, so I have always felt it is best to wait at least 3 months before trying to conceive again. However for many the urge to try again is very strong, and they start trying alsmost immediately after.

 I will research this and find out what the common consensus of opinion is, and let you know