Hello and welcome to HCM.
Thank you for your query.
Although
vaginal discharge is listed as one of the side effects of birth control, it is also a sign of an infection. Which is why you might have to report to your doctor to get examined, and rule out/diagnose an infection. A few of the other more common symptoms associated with an infection are:
-Burning sensation while urinating
-Frequent urination
-Increased urge to urinate, but less amount of urine passed
-Chills
-Fever
-Lower abdominal and/or flank region pain
-Itching around the genitals
-Blood in urine or immediately after (not always seen)
-Vaginal discharge
-Painful sexual intercourse
and a few others.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://doctor.healthcaremagic.com/doctors/dr-shoaib-khan/64581 . I would gladly help you.
Best wishes.