Have you checked your pamphlet? What does it say? The majority of combined pills have a 24 hour window so you should be good, but there are a few select ones that still have a 12 hour window. Most combined pills also allow for 1 missed pill anywhere in the pack without it affecting anything but you should still double check that in your missed pill section. If you are unprotected then you will need to use condoms sex this weekend. Again: check your pamphlet!