hi there, the vaginal discharge
or burning could be due to trauma to the vaginal wall or due to injury
. It would be a better option to visit a gnynecologist and get an examination done along with a vaginal swab taken to rule out any STD
. If you are not vaccinated against HPV
then this also could be an opportunity for you to do the same. It would be safe to use barrier contracetion like condom to prevent unwanted pregnancies and protection against STDs. Take care.