Thanks for your query.
I have read the history of pinkish blood on the tissue paper after burning of the vagina during sex indicates that you have vaginitis.
I would advise you to consult a Gynecologist to have a clinical examination and per-vaginal examination to determine the cause and get treated accordingly till you get a cure.
Your sex partner also should take the full course and no sex till you both are cured of the problems.
I hope this answers your query.
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