Missed miscarriage recovery

Went for my 6 week scan and no foetus or heartbeat was detected. Gynae said it is likely a blighted ovum - where the embryo stopped developing, and I should expect bleeding to come. Would like to seek advice from those with similar experience: 1. when did your bleeding start and how long did it last? any unbearable pain? 2. how long after that did you feel back to normal? 3. when is it ok to start exercising?