Help! Itchy down there

Hi,
Welcome to ehealthforum,
The itching in genital area that you describe suggests possible vaginal/vulval infection. Change in vaginal discharge color, appearance, consistency, or smell and association of other symptoms could be suggestive of possibility of vaginal infection. The infection could have been caused due to sexual intercourse or due to hormonal changes. Visit your doctor/gynecologist at the earliest for thorough examination and further evaluation (vaginal swab/smear test, PAP smear test) to look for the undying cause. Get started on treatment as indicated by your examination findings/investigation results. If infective cause is detected, get your partner also treated simultaneously to prevent chances of re-infection. Drink plenty of water. Take adequate rest. Avoid vaginal douching, use of harsh soap or perfumes in the area. Use loose cotton undergarments and avoid use of tight fitting clothes.
If you have not been regular with your birth control pill use, and have been missing taking pills at scheduled time daily, you can be at risk for pregnancy. Pregnancy also changes vaginal secretions and you can get more susceptible to infection. If you suspect chances of pregnancy, you should consider visiting your doctor/gynecologist for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately.
Take care.