hiv is transmitted through...
unprotected vaginal / anal intercourse
sharing iv drug works
mother to child
at no point did you have a risk for contracting hiv.
As you have told already it,s not a risk for STD transmission,however it is a filthy habit that you should seek some professional help for.
But the bacteria is still live in there are u sure no std I have from sniffing underwear?and I have my test at 13 is -