A pregnant woman will most definitely notice their swollen feet, but their hearts will also enlarge in size during a pregnancy.

For a man, excessive alcohol consumption (two to four drinks per day for over two months) can diminish fertility and for a woman, even moderate drinking can make it harder to get pregnant.

Chlamydia and gonorrhea are important preventable causes of pelvic inflammatory disease (PID) and infertility.

Smoking increases your risk of serious heart and blood vessel problems from combination hormonal contraceptives (CHCs) including heart attack, blood clots, or stroke which can be fatal. This risk increases with age and the number of cigarettes smoked.

You should not use the sponge when you have any kind of vaginal bleeding — including during your period. It could increase your risk of toxic shock syndrome.

You can use emergency contraception right away - or up to five days after sex - if you think your birth control failed, you didn't use contraception, or you were made to have sex against your will.