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Case Study - The Vaginal Air Pumping Phenomenon for no sexual orgasm
> Problems:2/23/1998> when we have intercourse, I get air pockets in my vagina.
Dr. Lin's Answer:2/23/1998>

Your problem is caused by long love strokes under which the penis shaft is moved too far way out when the penis recedes from the vagina. Under this circumstance, the penis/vagina system is like the Air Pump for your bike. When the penis is in the backward (outward) stroke, the air leaks into the vagina; when it is in the forward stroke, the air is forced into the end of the vagina and uterus. Hence, in the forward stroke, the end of the vagina will be tented up by the air pressure. This will prevent the direct contact pressure acting by the glans penis on one of the key stimulation points, the Epicenter which is located between the cervix and the bladder. As a result of the improper contact between the glans penis and the Epicenter, the lady will feel there is a film near the Epicenter, that prevents the sexual stimulation there from the glans penis. Sometimes, when there is too much air trapped inside the vagina, the air pressure may induce the uterus pain and cramp.
When you feel there is a film inside there, you should ask your man to pull out his penis and to let you expel the air from the vagina. Then, you should change the love position.
The Air Pumping phenomenon is very common for back-entry (doggy-style) positions with a short penis. That means, the man with the short penis should not use back-entry positions. The other cause is that the vagina is not well lubricated or the penis is not full erection. No matter what is the cause, the vagina must be completely sealed by the lubricant, natural or artificial, under the love thrusting.
The Air Pumping phenomenon will prevent the sexual stimulation for women, ending up with wasting your time and energy in the intercourse.

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