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Case Study - Blowing bubbles out of the vagina and vaginal air pumping for no sexual orgasm.

Do you have yeast infection or a sour taste in your vagina? If yes, treat it.
If not, it is caused by air trapping during lovemaking.
Generally, it happens after sex, and the trapped air slowly escapes out of your vagina and uterus during daily activities. Please don't use the back-entry (doggy-style) love position which moves your uterus toward your stomach to suck air into your vagina. As the air is sucked in and the penis compress the air into your uterus, the air get into the uterus. Each long-love stroke will allow more air to get into the vagina again when the penis is move out around the vaginal orifice. The vagina serves an air compression cylinder/chamber and the penis acts a piston. This is called Vaginal Air Pumping. Also, it is very difficult for you to achieve orgasm when there is air trapped inside. You should blow air out of your vagina after using the back-entry position; otherwise, you will feel there is a film inside to isolate his penis from your vagina.