There is a paper that comes with every pill pack. The answers should be in there. If you don't have the paper or can't find the answers you need, call the doctor who put you on the pill, they will be able to help you more. You need to use a back up method of protection until you find out what you need to do. (Such as a condom) Hope this answers your question,.
Most active pills are of the same dosage so if for example you took the wrong Monday pill, to ensure you don't get confused, you should continue taking the rest of the week pills from the correct row and when you get to the following Monday, take the one you missed and go forward from them. You may need to ask your doctor about the dosages because I know some pills have different dosages every week.