Final answer:
To prevent pregnancy after missing two days of oral contraceptive use, the woman should take emergency contraception. There are two main types of emergency contraception: the morning-after pill and the IUD.
Step-by-step explanation:
In this situation, the woman has missed taking her oral contraceptive for two days, which increases the risk of pregnancy. To prevent pregnancy, she should take emergency contraception as soon as possible. Emergency contraception works by preventing ovulation or fertilization, or by inhibiting implantation of a fertilized egg.
There are two main types of emergency contraception: the morning-after pill and the IUD. The morning-after pill, such as Plan B One-Step, can be taken up to 72 hours after unprotected sex and is available over-the-counter for women ages 17 and older. The IUD can be inserted up to five days after unprotected sex and is highly effective in preventing pregnancy.
It's important for the woman to speak with a healthcare provider to discuss the best option for her and to address any concerns or questions.