I recently had a similar experience with a gf that I had just began to have sex with. She wasn't used to having a man with a large penis and it took 3 or 4 times of having intercourse to be able to go all the way in. I'm not saying I hit the cervix or any other part besides the vagina (I'm not the biggest at 8.5" x 5.5" on a good day), but she insisted that she felt a throbbing and almost electrical shock type of sensation deep inside her for up to 24 hours after we had sex each time after I was able to insert myself all of the way inside her. Can any of you ladies or medically superior males tell me what I was hitting and why she had these type of sensations. Which by the way she said she loved to feel.

Thanks in advance.

J