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Medicine can't be prescribed without in person examination or evaLUATIOn IT'S best TO CONSULT a DOCTOR... SELF-MEDICATION can be DANGEROUS...

Periods can sometimes be late due to stress, changes in life, or even illness. Since you used protection, the chances of you becoming pregnant are lower. In case, the delay continues you can do a home pregnancy test for reassurance. Tracking your period is always a good idea. 

You may be experiencing symptoms of a vaginal infection. Talk to your gynecologist for a proper diagnosis and treatment plan. Using over-the-counter creams or medications without a proper diagnosis can worsen the condition.

The effectiveness of the pill depends on factors like timing and individual variables. If you're sexually active and concerned about pregnancy, consider taking a pregnancy test if your period is significantly delayed. 

If you had an emergency contraceptive pill within 12-15 hours of intercourse, you are usually protected. It's common to experience changes in your period after taking the pill. Wait for your next period; if it's late or abnormal, do a pregnancy test. Also, using regular birth control methods is important to prevent pregnancy in the future.

Birth control methods are usually beneficial for those who want to prevent pregnancy or regulate their menstrual cycles. The choice of birth control depends on the individual health, lifestyle, and personal preferences.

You should get it checked by a specialist as soon as possible. It could be a sign of breast infection, cysts or even breast cancer. Just be sure to visit a specialist and get a proper diagnosis.