How soon are you allowed to try again after pregnancy loss?

1 month or longer. After one miscarriage, it's best to wait a month; there is some evidence of a higher chance of another loss in the first month. After two or more miscarriages (recurrent pregnancy loss) you should see a reproductive endocrinology and infertility (rei) specialist to look for causes before you get pregnant again. After one loss you should see an rei if it took a year or more to conceive. Best wishes.
3 months. Though you donot always have to wait but it is good idea to let body recover for 3 months.
At least 2 months . After a miscarriage it is recommended to wait to conceive for at least 2 menstrual cycles to allow complete healing and hormonal balance. Good luck. .