well, you never specified whether you have any sexual condition that you have contracted. There are many sexual conditions which entice buning sensations. I can name opver 10 different types, depending on your sex.
If burning consists, i would certainly assume medical help would be best. If you have an active sexual life, then perhaps a blood test would be appropriate, with medical advice.
Shisci
I advise you try and keep in contact, if that is possible. If it isn't, let her make the next move. If she is desperate, she will indeed get in contact. If it is over another man, all you can do is sit back and experience any bad associations she can have with him, leading back to you after dispare. If the situation is ethical, then find another person to share your intimate desires with that will fulfill your needs, sexually, and asthetically.
Then she isn't worth it schi. A relationship always needs to be balanced, neutral and proportionally advantageous.
The greatest fault of love, is that one thinks love can be around but never have. If you love this girl, then the pain will be greater if you are around to see her liaisons. The best action, is to protect your own emotions. The way to achieve this, is by discluding yourself totally from her onside actions. Otherwise, you punish yourself.