Hi Doctor. I had visited a massage parlor. I was wearing a polypropylene disposable pant and lying down with my face down on my belly. The messager was a girl and was nude. She sat on my buttocks nude during massage while I ejaculated in my pants. There was no penetration involved orally, vaginally or anal. I fear that might be her vaginal fluid somehow passed the disposable pant and touched my penis or anus. Is there any possibility of hiv transmission.