Taking an extra combination pill by mistake on one day usually isn't dangerous, though it can cause mild nausea or spotting. Skipping today's pill to make up for it isn't the right fix though, since a missed pill is what actually lowers protection, not an extra one.
Next Steps
Please take today's pill as scheduled and continue the pack in its usual daily order. If you ever do miss a dose going forward, use a backup method like condoms for the next 7 days.
Health Tips
Please see your gynaecologist if you're ever unsure which pill to take next, since getting the sequence wrong can genuinely affect how well it protects you.