| A | B |
|---|
| Miscarriage | Expulsion of a baby from mother's body before the 20th week |
| Stillbirth | Loss of fetus after 20 weeks |
| Premature birth | Born before 37 weeks and weigh less than 5lb. 8oz. at birth |
| Low birth weight | Weigh less than 5lb. 8oz. at birth |
| Abstinence | Avoiding sexual activity completely |
| Teen sexuality | Self-concept as male or female linked with physical, intellectual, emotional, and social development |
| Sexually transmitted disease | Infectious illnesses passed mainly through sexual contact |
| Chlamydia | Most common bacterial STD and may have no symptoms. Causes infertility, pain, or tubal pregnancy if untreated. Chlamydia trachomatis |
| Gonorrhea | Bacterial STD- causes inflamed genital mucous membrane, burning when urinating, and a discharge. Gonococcus bacterium |
| Syphilis | A serious bacterial STD affecting the brain, genitals, skin, and nervous tissue. Sore forms at contact point. Treponema pallidum |
| Herpes | Viral STI causes small painful blisters and inflammation in genitals, mouth or nose. |
| Genital warts | Knotty lump(s) which grows on the external sex organs. |
| HIV (human immunodeficiency virus) | STI which causes AIDS that breaks down one's immune system |
