Just started taking the pill and i think i started it wrong, please help!!?

Im 18 years old and i just started taking the pill. Im not having but im ually active if that makes sense and the doc said to start taking the red pill on the first day of my period that corresponds with the day so i have been and then i was reading the pamphlet and it said that your supposed to start in the whites in the grey section so i asked the pharmacy and they said i should of started in the white, and my period has now finished after 5 days and i took the red pill 5 days, but the pharmacy told me to start taking the white pill in the grey section that corresponded with the day today, so yeah started taking that. So now I'm really confused and i dunno if i've stuffed this up or not or do i just continue with what im doing? I still got 2 red pills left in the red section so should i just disregard them and chuck them or what?? Please help me!!