All hormonal methods, especially Depo-Provera, are associated with loss in bone density for teens. Additionally none of these methods offers any protection from STDs like the AIDS virus. Older women who smoke should not use combined oral contraceptives. These methods offer no protection from STDs. Although these are some of the more effective methods of pregnancy prevention, many women do get pregnant despite proper use.
Hormonal methods offer no protection from STDs.
Talk to your mate about this possibility ahead of time. Hormonal methods suppress ovulation much of the time, but scientists recognize that in many cases ovulation continues to occur. Some women who use hormonal methods ovulate every single cycle. This is an important distinction, because any woman interested in preventing fertilization will want to avoid using these methods. Although there are legitimate medical uses for some of these drugs, clinicians tend not to explain the interceptive effects to their patients, some being unaware themselves.