BirthControl
Sheath or condom
98% Effective
A Sheath is placed on the penis before sexual intercourse, this traps the sperm and prevents them from reaching the uterus.
Diaphragm
A thin rubber disc is placed in the vagina, this covers the cervix and prevents sperm from entering the uterus.
95% Effective
Femidom
It is made from polyurethane or rubber, the ring at the closed end is inserted into the vagina to hold the femidom in place and the ring at the open end is placed outside the vagina, this traps sperm inside the femidom
95% Effective
Spermicides
Spermicides immobilize or kill sperm by harmless chemicals for tissues.
98% Effective (if used with condoms or diaphragms)
intra uterine device (IUD)
A small T shaped coil can be inserted into the wall of the uterus where it probably prevents pregnancy.
about 98% Effective
intra utrine system (IUS)
It is similar to IUD but it also releases progesterone slowly over about 5 years, this hormone prevent ovulation.
more than 99% Effective
Contraceptive pills
It contains chemicals that have the same effect as oestrogen and progesterone, if mixed in the right proportion the suppress ovulation
99% Effective
Contraceptive implant
99% Effective
A small 4 cm long tube is inserted into the woman's arm and releases progesterone preventing pregnancy.
contraceptive injections
A progesterone injection stays effective between 8 and 12 weeks by thickening the mucus in the cervix stooping sperm from reaching an egg.
More than 99% Effective
Monitoring body temperature
by knowing the woman's temperature you can predict a period of about 10 days of fertility.
not very Effective
Cervical mucus
cervical mucus gets more fluid as the ovulation approaches woman can learn to detect this change and so predict their fertile period.
if combined with monitoring body temperature about 80%