Hi,
Welcome to ehealthforum,
The symptoms that you describe along with changes in vaginal discharge color/consistency/smell could indicate vaginal infection, STD, vaginal irritation & inflammation, etc. Avoid self treatment and visit your doctor/gynecologist at the earliest for thorough examination along with vaginal swab/smear test to identify causative agent. Treatment as appropriate (based on examination findings and investigations results) would be started to help you control the symptoms. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle. Avoid vaginal douching, or use of harsh soap or perfumes in the area. Use loose cotton undergarments and avoid use of tight fitting clothes. Avoid sweat accumulation and keep the area clean and dry. If infective cause is detected, and if you are sexually active, get your partner also treated simultaneously to prevent chances of re-infection, and avoid having intercourse while being on treatment.
Take care.