Microgynon 30

Hi everyone. I started the pill on November 10. I was supposed to have my period on that day so i took the pill. However, on the next day there was no bleeding, just a mere spotting like the next day which i thought would be my period. I continued the pill. It’s been 9 days already since im on pill. I have been taking it on the same time everyday. I am late by 14 days and i tested for pregnancy and it was negative. Can i have protected sex? (It’s my first time on birthcontrol)