I have unprotected intercourse 3 weeks ago with a female. A few days after that, I started have a discomfort within my penis during urinating. It's not really a painful feeling but i never have that discomfort before. After urinating, i would feel some itchyness in my penis. Most of the time, this feeling of discomfortness during urinating only occurs in the first half of the day (morning), at night it would be a lot better. I have NO rash and NO red spots found on my penis. Now I am very worry that i may have caught any types of STDs (ie: chlamydia or gonorrhea). Please help........ Thanks!