Unless a medical professional specifically warns against it, sex is fine during a pregnancy, as it poses no risk to the baby.

Studies have found that women who consumed around 200 milligrams of caffeine daily, which is the equivalent of two cups of regular coffee a day, were twice as likely to suffer from a miscarriage. Experts recommend that during the first trimester of pregnancy caffeine should be banned from a woman’s diet, and during the later months the intake should be limited to around a single cup of regular coffee per day.

Kaolin and pectin preparations (such as Kaopectate) are not absorbed and that's why safe.

Some STDs like gonorrhea and chlamydia can cause infertility by blocking the epididymis or tubes.

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.

Emergency contraceptive pills are often called 'morning after pills' and sometimes even 'day after pills' because you can use them after sex to prevent pregnancy.