forgetting to take junel

This is my 10th day taking junel. My doctor didn't explain very much to me about what not to do or what i should do in case of something. I tried to read the information that came with my birth control then i tried to look for my question online and I couldn't find an answer. How long after i forget to take a pill is it ok to take it without risking anything? also should i ever take two after missing one? one thing said no and the other said yes.