What's the Best Sex Position to Avoid Deep Penetration?

Dear Dr. Betty,

I am 22 and female-bodied, currently dating a 20 year old male. With my current partner and past male partners, I've experienced a bizarre, unpleasant sensation during vaginal intercourse any time my partner's penis hits my cervix. I wouldn't describe it as painful, but definitely not a feeling that I enjoy. I've recently discovered that this is due to an unusually retroverted uterus - my gynecologist tells me that my uterus has not only an extreme backward tilt, but also sits distinctly to the left side of my body.