The G-Spot(Urethral Sponge) sits 1-2 inches inside the vagina behind the pubic bone.Sorry to correct you.
Yes this is normal. The cervix connects to the uterus. The little hole in the cervix is where the period blood/ baby comes out. So pressure can make it bleed a little. Also, right behind the cervix is the G Spot, so this is why she likes it. Not harmful at all.