Thanks for the query..
I think you had a spontaneous abortion
You can get an ultra sound
scan done to know whether the abortion is complete or not..
If it is complete you don't have to undergo D&C.. but if there are retained products of conception and if you are still bleeding you can take some medications to make it complete.. D&C can be taken as last resort..
When once this abortion is over you can take treatment for PCOS
Hope this information is helpful.. Take care..