Choosing the safest contraceptive depends on your health and allergies. Implants, shots and IUDs, the most effective contraceptives, have the most dangerous side effects, whereas condoms, sponges and cervical caps, contraceptives with the least dangerous side effects, have the highest chance of pregnancy.
Warning
While using any contraceptives, seek medical care if you experience severe pain in the abdomen, chest, head or legs, or if you have blurred vision or numbness.
Allergies
Latex allergies affect up to 6 percent of the general population and approximately 4 percent of people experience spermicide allergies. These allergies can render condoms, cervical caps and diaphragms unsafe for those affected.
Side Effects
Oral contraceptives, patches and injections may cause irregular bleeding, headaches, weight gain or nausea. IUDs are associated with pelvic inflammatory disease, and implants are associated with blood clots and ovarian cysts.
Health Concerns
All hormonal contraceptives have health risks that are aggravated by smoking. Cervical caps and IUDs are not safe for women who have had toxic shock syndrome.
Fertility Concerns
Eptopic pregnancy, implantation outside the womb, may occur when using an IUD or birth control implant. Pelvic inflammatory disease associated with an IUD may affect future fertility. Less than 1 percent of women miss their periods and do not ovulate for more than six months after stopping use of oral contraceptives.
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