Hi. I Sarted With Novelon 21 In Between My Period

Hi. I sarted with Novelon 21 in between my period cycle. My periods were due on 4 but since I am on pill I did not get them. Now today my 21 days are over. When will I get my periods? will I get it in 7 days if not then what shud I do? And when do I start with the pill again? Will I be protected?