Having strange fear during sex, need medical warning?

Its like this whenever i own sex i feel a pressure surrounded by my stomache like i want to deficate, i read something where on earth a doc said that the penis might hit on the wall of the vagin which is close to the retum and that wall is very withered. so that is why at hand is that urge to poop is this true and is there more to it. Do u or anyone u know hold that problem too.
Answers:

Help Please!! Kind of gross?

No worries--that can happen sometimes.

It might serve to sit on the toilet before have sex. If you've got time, empty your bowels could help.

Also, try some different positions. Is your partner aware? You two could integer something out together. On top is always upright for me! : )

Good luck!

Helpplease..my cousion is doing something terrible?

wow um chitchat to your doctor about that or who ever your have sex with

Ok i pocket bith controll and havent statred yet relieve plzzzzzzzz?

haha ohh my god I thought that there be like something wrong because that happend to me... it merely happened one out of the 2 times I've have sex. So I got charitable of worried.. well at most minuscule I know it's nothing gruesome