Carpets are ruined if its been days unless ther are not wall to wall and
can be removed and dried right away, There are maybe a thousand types of
mold only a few are bad , unless you feel sick dont worry. The lanlord
is responible for your issues. Cleaning professionaly if its wall to
wall probably wont be enough since the carpet will be wet underneath for
days. contact him demand nicely it is fixed now, you have renters
rights. If its wall to wall best is remove carpet, wash floor with
maybe 25% bleach to kill mold and new carpet.