hello my daughter has recently had her period and 2 days after her period had stopped ....she has started to have her period again ..........she is 13 yrs and this is her 3rd period ....the space between her first period and secound was 3 mounths ...........space between 2nd and 3rd period 2 days ....................is this an abnormal thing ....i have searched the web and read of people having 2 periods in on mounth ...but we are worried about the extremly short space that this has happened .......( is this called metrorrhagia ? ) thank you for your time