This area is still in the beautifying and editing stage, but feel free to have a look about
The vagina is often showed to be one long tube, that is the same from top to bottom, which it is not. I’m sure if you are reading this and have a vagina, or have interacted with one, you may think that sounds obvious, come to think of it.
The Bottom or Base of the Vagina
The bulbs either side of the vagina may enjoy a gentle stretching; this is why penetrating the vaginal opening with fingers, a toy or penis can feel good, as it pushes the swollen clitoral bulbs apart causing a pleasurable pressure. A rhythmic stimulation or stroke can also be enjoyable. usually only when the owner of the clitoris feels aroused and the vagina opening is moist to the touch
Disclaimer Note; these physical changes happen in their own time, and don't like, or need to be rushed. They often don’t happen rapidly, or always at the same time, each individual, in each different circumstance may respond differently. Psychology and emotions are important and influence arousal.
This area at the base of the vagina, about 1 inch inside and usually has a slightly different texture, more bumpy than the rest of the vagina and is particularly pleasurable; sometimes known as the ‘G-spot’ or ‘sacred spot’. However it isn't a 'magic button' . Anatomists are still unsure whether the skin in this area, at the bottom, front wall (in the belly button direction) of the vagina is particularly dense in nerve endings or not. (REF)
It is thought that this lovely pleasure is caused by the meeting of three of pleasure-spots; the vagina skin, the urethral sphincter and the clitoris (internal bulbs), is the G-spot, rather than a particular separate 'button' or spot. It is a general area, where these good places meet, everyone's will be slightly different, and around half of people with a clitoris report something they would call a 'G-spot'.
The vagina his skin is a way of touching the internal clitoral bulbs, made of erectile tissue, through the urethral sphincter. (more info under “The clitoris” )
The Urethral sphincter is a round muscle that opens and closes to let urine out, which can also feel very pleasurable when aroused. It sits between the vagina wall and the internal clitoris bulbs. Some people like to stroke the head (or tip) of the clitoris at the same time, to arouse the whole clitoris.
The Deep Vagina
When a person is feeling very aroused,the uterus, (and with it the cervix) moves forward towards the belly button, and very top or back of the vagina is then exposed.
This area at the top or ‘deep’ in the vagina (shown in the illustration) is usually covered by the cervix, has a dense patch of nerves that can be very pleasurable and intense. The cervix is the front part of the uterus, that has a small opening, called the O’s, this is where menstrual blood leaves and baby’s come out of into the vaginal canal.
When people talk about ‘cervical orgasms’, when there is penetration of this deep vagina area, this is usually what they refer to; the deep, top part of the vagina wall rather than the actual cervix. (SEE MORE OF THIS IS ‘CERVIX’)
If the person isn’t fully aroused, or not quite in the mood and/or the cervix hasn’t moved forward, out of the way, any penetration may bump against the cervix, which can be painful.
However you can always go to you doctor if you are concerned about a health issue.
Disclaimer Note: These physical and psychological changes happen in their own time, and don't like, or need to be rushed. They often don’t happen rapidly, or always at the same time, each individual, in each different circumstance may respond differently. Psychology and emotions are important and influence arousal, so be kind to yourself and listen to your body.