Itching with clear vaginal discharge, Please help

Patient: I had sex and three days later now feel dirty little ich lower cramps but not bad lower back hurts seems to b clear discharge and dont seem to have an odor i have bactrim ds 800-160 tabs i can take

Doctor: Clear, odorless discharge is usually normal. The slight itching you have may be due to vaginal dryness associated with t he hormonal changes during this age period. You need to consult your doctor for clinical examination and any infection, if diagnosed, then specific antibiotics may be required for treatment. Also taking antibiotics without proper diagnosis, may lead to development of antibiotic resistance and may also cause infection to flare up at times.