Hello,
I have actually been on this pill, hope my answer doesnt come to late.
You can start it yes. You would need to use extra protection for 7 days after however. You will probably not get a period until after the second full pack. Sometimes you get a slight spotting though.
If you dont get a period after the second pack i would consult your doctor.
P.s when you come to the end of this pack you are taking i would move straight onto your next pack without a break. That will mean you are fully covered and there will be no risk of pregnancy. Hope this helped!