Thanks for the query.
As you were in menstrual period, when you started the nuva ring the possibility of pregnancy
is very less.
Because ovum won't release during the menstrual period generally.
While using hormonal
contraceptives some amount of irregularity in menstrual cycles is common.
The spotting you are having could be due to the hormonal fluctuation after removal of the ring.
The ring can alter the vaginal discharge
and also vaginal discharge can increase during periods.
So because of these you might have had white clot and spotting.
Possibly the spotting will soon turn into menstrual flow.