From the description of your symptoms, it appears as though you have some vaginitis
. This could be secondary to the procedure of insertion of the IUD, or may have happened in an isolated manner. This is a recurrent problem, especially if not completely treated. Since you are breastfeeding
, you cannot be given oral medication. You need to take the vaginal medication again after a proper evaluation. If needed, a swab test for culture and sensitivity should be done to plan proper management. Periodic treatment is needed for 3-6 months to prevent recurrences. Please maintain proper genital hygiene, avoid vaginal tampons and sexual intercourse until complete healing. Hope this helps.