Hello and welcome to health care magic forums.
Itching and frequent urination
suggests an infection in your vagina, most commonly of fungal origin. My advice is to visit an OBGYN
specialist and let the doctor have a look at your symptoms. The doctor will advice Clotrimazole
pessaries and a course of Metronidazole
if associated bacterial infections are present.
Your burping and abdominal symptoms are not associated with this.
On a side note I want to add that being on birth control at this young age is not advisable. There are numerous studies which shows a high chance of Cervical cancer
in girls who are active in sex before the age of 18.
Thank you for consulting with us.