"Pulling out before the man ejaculates, known as the withdrawal method, is not a foolproof method for birth control. Some ejaculate (fluid that contains sperm) may be released before the man actually climaxes. In addition, some men may not have the willpower or be able to withdraw in time."

"A person gets HIV when an infected person's body fluids (blood, semen, fluids from the vagina, or breast milk) enter his or her bloodstream. The virus can enter the blood through linings in the mouth, anus, or sex organs (the penis and vagina), or through broken skin. Both men and women can spread HIV. A person with HIV can feel okay and still transmit the virus to others. Pregnant women with HIV also can pass the virus to their babies. Common ways people get HIV include; sharing a needle to take drugs, having unprotected sex with an infected person You…"

"Some STDs are there for life, like herpes and HIV. Others, like chlamydia and gonorrhea, can be treated, but you may get infected again if you have sexual contact with someone who has them. What can you do? Protect yourself with condoms, of course! And if you’re having sex, let your doctor know so you can get tested regularly. If you do get diagnosed with an STD, your partner should be treated at the same time you are. That way your partner will avoid future problems — and avoid reinfecting you"