After reporting a loss, Ovia will use a combination of data logged in the past few months and new data to make future period projections — you may or may not see a prediction for next month depending on when you logged your last period. Past data will not be erased from your calendar, however, it will not be used to create future predictions. Many women resume their cycle in about three to six weeks. You can read more about what to expect after miscarriage here.