Can anybody help!!! I was on lutera but my pharmacy did not got my OBGY approval for refill ontime?

,,, so I had to stop taking them for 1 month. the 28 days are over so I should start taking them on next Sunday. However, i miss my period and i think is because my system got confused "NO PILLS". safe sex throughout the month was a priority. so I know I'm not preggo! but should I start my new package on Sunday anyways even w/o my period?