Hello and welcome to health care.
From your description I think you are having Genital warts
. They are viral infections which can spread to adjacent areas. So my advice is to visit a Skin specialist and let him have a look at the lesions.
It's important as some of them can turn dangerous if untreated.
The burning pain is not related to this.
If you still have the pain, request the doctor to do a urine test as well.
Thank you for consulting with us.