My partner and I had unprotected sex during my period (on 3rd/4th day). I'm to start using birth control pills for the first time on the 5th day. My period usually lasts 7 days.
Unfortunately I'm in a foreign country and pharmacies are closed till Monday which will be about 60hrs later when I can take plan b, and by then I'll be taking birth control pills.
Should I take plan B in combination with the birth control or should I simply go ahead with the birth control pills.

I am aware that what happened was irresponsible and unfortunate especially as I had already planned on being safe. Help and advice would be much appreciated.