HELP ME!

So i am taking the pill, and right now i am on my period and finished my white pills. But i was supposed to pick up my new pack today and ended up being late to get them so now i am missing the sunday pill on the new pack which is blue..but i am still on my period. What do i do!!!! I get the new pack asap in the morning! How long before having sex should i wait? I am freaking out