If you’re on a combined pill and you took at least 7 days of pills beforehand then you can just count the 2 days as a small break week and continue as normal after. If your break week is coming up within the next 7 days it would be best to skip.
If you did not take 7 pills prior to missing two then you might have to take a plan B or possibly take a pregnancy test in 3 weeks depending on when you last had sex.
If you are on a mini pill you will lose your protection but any sex you had before becoming unprotected is still covered for. You’ll just be unprotected until you take 2 days correctly again.
Taking the extra pills on Monday won’t do anything regardless of what pill you are on so I would just continue per normal.