STD or other condition from shared snorkel mask?

[worriedvacationer]

I put this in STD's because I don't know where else to put it.  I'm an exchange student in a country where the health care not cheap, easily accessible or as good as back home and that's why I'm posting here - thank you in advance for anyone who can offer helpful information.  I went to Thailand for vacation and the water was beautiful and clear and the only place I could find on the entire small island that had snorkeling stuff had the gear for RENT - not for sale - therefore it had already been used by other people.  I talked to the man and he knew almost no english - so my questions about how he cleaned the equipment were not answered.  The stuff seemed dry at least, so I figured that since it had probably been at least a half hour since someone else had used it (and more likely, a day or so, maybe a week), then maybe any transmittable viruses or bacteria would have been killed in that time. I hope this was not bad logic. It started hurting after about 30 minutes of snorkeling, and I hoped that it was just because the snorkeling gear was messed up and kind of bent weird into my mouth - jamming into my lower gum line and making it raw.  However this was 4 days ago, and although it hurts a little bit less today, I would think it should not still be hurting.  I had been looking at my inner lip every day to see any signs of disease - and just today I noticed I have 2 small white blisters at the bottom of my mouth, behind my chin, under my lip.  They are a little bit tender and hurt when I eat or drink something acidic. I had a cold sore once on my lip almost ten years ago and since then haven't had any kind of outbreak like that (that I've been aware of anyway).  This is different though - it's inside my lip.  I am hoping that I'm being a hypochondriac but I am really scared - could this be the bad kind of herpes? Or hepatitis? I'm really freaked out.

[worriedvacationer]

Hey, I think I just figured out what it is. I think it is a canker sore that was caused by the irritation from the snorkel - I know that the snorkel is what caused it and I'm glad that you were nice, because some people on other forums were a bit condescending.  Have a nice day and thanks for assuring me.

[Life360_Dave]

Hi and welcome.
Herpes simplex is  transmitted by direct contact with a lesion or the body fluid of an infected individual. Transmission may also occur through skin-to-skin contact during periods of asymptomatic shedding.
You did not get herpes from using the snorkel, its from human to human. So just go have a good time. The snorkel did not fit well in your mouth and seems to have caused some brusing and your mostly likely picking at it out of concern causing more irritation.