How to Avoid an Injury during Oral Sex?
Injuries can occur also during oral sex. Read the article so that they won’t happen to you.
A hard penis pushed too hard into the palate can cause dark bruises. (jlp)
Sometimes people go overboard during oral sex because of the desire for greater pleasure, and some consequences seem pretty unbelievable.
Bruises as a consequence of oral intercourse
An article published in 1980 in 
Military Medicine magazine and written by a group of dentists describes, among other things, girls with bruises on their soft palate. A girl noticed a blue and black mark in the back of her mouth. The tissue in that part, which is close to the tonsils, is full of blood and full of numerous small veins. An erected penis that bumps into this sensitive part can cause bruises during oral sex. This, of course, is not an everyday injury and there’s no medical assistance required because it goes away on its own. But still heed the warning – the woman should be the one to control the movements during oral sex, not the man.
Be careful not to suck the sperm into your sinuses. (jlp)
Sinus infection because of oral intercourse
Regulating your breathing during oral sex can be pretty complicated sometimes. It’s important when and how you breathe in during oral sex because otherwise the sperm may surprise you – especially if you’re not really skilled in finding out when he’s going to come and you want his sperm to end up 
in your mouth.
An additional problem during oral sex is the vacuum you create if you want to drive him really crazy. This game is fun all the while to the point until he comes. If he comes in the back of your mouth while you’re maintaining a vacuum, you suck the ejaculation into your sinus cavity and this can cause an infection.
