Not all women's vaginas pulsate as obviously as your wife's does. It's a question of degree.

Also if the dildo was made with phthalates, most of us will experience irritation as a result of this toxic material in a product.

I seriously doubt this is caused by masturbation unless you are doing penetration with a dildo that is not a quality silicon rubber.

Learn about your own body by exploring masturbation including vaginal penetration.

As long as his "rash" is not painful and your vagina is not causing you any major discomfort, I wouldn't worry.

I feel any cold pressed oil like grape seed, apricot, avocado are all good to use as lubricants.

Many women who ejaculate also report it is not the same as having orgasm.

Anytime something bleeds on a regular basis other than your period indicates something is out of whack.

If you want to continue to explore this, tell your partner to ease off.

I always recommend using additional lubrication for all forms of penetration.