What am I supposed to do if I lost my package of Birth Control Pills?

I’ve been taking Yaz for about 4 months. On Saturday night I took it at work. I have absolutley no idea how it went missing because I didn’t even take the package out of my purse. Last night I couldn’t find it, and I’m supposed to take it at 7:00 so I’ve been looking for it. I cant find it anywhere!

Do I start a new package and have my period delayed? I don’t think I’m going to find it, so what do I do now?