It will take time and practice to learn another masturbation technique.

Even though you feel "turned on" and you think you are getting wet, I'd recommend adding additional lubricant.

Your vagina will gradually change as the muscles are slowly stretched.

Consider the possibility that your masturbation technique needs improving.

There isn't a "spot" in your vagina that will bring you to orgasm. Your clitoral system is complex. It's about clitoral stimulation with vaginal penetration.

My first thought was doing Kegel exercises and improving your pelvic floor muscle tone.

Unless you are seriously bearing down at the moment of orgasm, you will not shit, pee or fart.

I urge you to consider making some dietary changes and gradually coming off the meds.

I recommend you take control of penetration by practicing with yourself.

If you have not used your vagina during masturbation, then the muscles will be tight.