hi doctor，i am having pep treatment now！today is15 th day, but this morning a guy sucked me dick about 15mins and i ejaculated in his mouth,durling this period i touched his dick,i don't know thether he is hiv positive or there is a dental uicer. and i found my dick have some small red spot,i just want to know whether i need to extend the pep treatment for more 15 days !thank you!