Still take the pill, even if it’s too late. Because ovulation might not be suppressed, the first seven days are not safe. If you have sex you must use condoms for a week.
If you had intercourse in the week preceding the forgotten pill, you must continue taking the pills from the pack and get the morning-after pill. You need to phone the doctor for a recipe.

Forgotten in the second week?
Forgotten in the third week?