1. Gonorrhea
This site contains information about gonorrhea Gonorrhea. Gonorrhea is a sexually transmitted disease (STD) caused by a bacterium called. The disease however can spread into the womb and fallopian tubes, resulting in pelvic inflammatory disease...
http://www.mamashealth.com/gonorrhea.asp

2. Ectopic Pregnancy
Pelvic inflammatory disease is usually caused by invasion of either gonorrhea or chlamydia from the cervix up to the uterus and tubes. A progesterone level of less than 15 ng/ml is seen in: Therefore, a single progesterone value less than 15 is...
http://www.advancedfertility.com/ectopic.htm

3. STDs: General Information
This is because young people are more likely to be more sexually active and take more risks, and the cervix of a teenager is more likely to get infected by Chlamydia and gonorrhea. One out of four Americans between ages 15 and 55 will catch at...
http://www.youngwomenshealth.org/std-general.html