Birth control success rates

The symptoms you reported (pain in back, stomach cramping and headache) might be found in pregnancy, but are not considered certain signs of pregnancy.


Every birth control product has its own rate of successful prevented pregnancy. You might discuss this rate for the products you used with your gynecologist.

Also, many hormone-containing birth control products need several days (usually seven days) in which the hormone levels raise in order to achieve the needed concentration for their full potential and complete protection. Before this happens, the woman is advised to use other birth control methods at the same time in the first seven days of taking the birth control product.


Since the date of the start of your last menstrual period and the date of the intercourse were not given, you might want to visit your gynecologist for a physical examination, hormonal laboratory tests, and an ultrasound scan in order to check for pregnancy.