Contraceptive implants may cause irregular bleeding which some women find unacceptable as a side-effect ("Irregular bleeding and spotting common in first 6 months" associated with IUS; similar to side-effects observed with IUD, injection or implant. "Changes in bleeding pattern which are likely to remain irregular") or a complete cessation of menstrual flow (amenorrhea). Side effects that are observed less often may include emotional lability, weight gain, headache, and acne. Side-effects for<unk>  are mostly similar to combined and progesterone only oral contraceptives, with a possibility of a small change in mood or libido observed in IUD and IUS use. The risk of acne vulgaris may be higher in IUS users, but is an uncommon reason for stopping use. Weight gain has been observed with depot medroxyprogesterone acetate (Depo-Provera). IUDs present a slight risk of infection at the time of insertion but have a low risk of pelvic inflammatory disease (<1% for women at low risk of STIs), and uterine perforation (<1 in 1000). If a person becomes pregnant while they have an IUD inserted then the IUD should be removed within the first 12 weeks of gestation. In such a case, the mother has low risk of ectopic pregnancy - approximately 1 in 20. Women who cease using depot medroxyprogesterone acetate can find that they have a delay of up to a year before being able to get pregnant, while there is no evidence of a delay in IUD, IUS or implant users.
Long-acting reversible contraception
Combined hormonal contraception
Heat-based contraception
Male contraceptive
Vas-occlusive contraception
Extended cycle combined hormonal contraceptive
Injectable birth control
Combined injectable birth control