The barrier method is used to prevent the male sperm from traveling to the female egg. Some common forms of birth control that is considered the barrier method are male condoms, female condemns, foams and diaphragms.
This disease in particular is an STI known as Gonorrhea. Gonorrhea is a bacterial infection caused by unprotected intercourse. More of less one of the more locally painful STI, which does cause discomfort in the genitelia, as well as discharge, and discoloration. It is luckily a curable STDs, usually with antibiotics.
If you don't recognize early signs of stress you might: 1. Feel completely miserable, 2. Be irritable, 3. Get things such as cold sores.
Hopefully this helps :)