Late combined pill

On my pill packet there are days of the week with each pill and this can help so you can see when you missed and taken a pill etc. However my dates aren't aligned, I am 4 days behind. For example the pill packet says start on Monday but I start on Thursday. This can be confusing, however to fix this I would have to purposefully be 'late' and start the new pills on Monday. I intend to fix this upon starting my new pill pack, what would I need to do contraceptive wise to still protect against pregnancy and for how long? I am on the combined pill and am currently on the 7 day break in which I have been sexually active