Help please! i don't know when would i ovulate after having a miscarriage a week ago?

3 + weeks: After a miscarriage a woman may ovulate and thus conceive as early as in 3 weeks time. She may not have a menstrual period before conceiving. The pregnancy test can be positive for up to weeks after a miscarriage. It can therefore become difficult to discern, if, in the absence of a menstrual period, a positive urine pregnancy test is caused by the previous or a new pregnancy.