When will my periods return after a miscarriage? 

If you have had a miscarriage, it may take 4-6 weeks for your periods to return. The length of time it takes will depend on how regular your periods were before your pregnancy. It is worth seeing your GP for advice if your periods have not returned after 4-6 weeks and your cycle was regular beforehand. Most doctors suggest that you wait three months after a miscarriage before trying for a baby again. This is to give you time to come to terms with your loss and for your menstrual cycle to re-establish itself.