Not Allowed to Have Sex: Alternatives?

I'm 33 weeks pregnant and 2cm dilated. One doc advised me not to have penetrable sex until after 36 weeks. Other said it was fine. Not sure who to believe but I do not want to risk any infection.

So, is there something my husband and I could do besides me giving him bjs and handjobs? The only thing I've come up with is me grinding on my vibrator while he jacks off onto me. (Using very clean vibrator on clit only, and I personally believe that an orgasm bringing on contractions is a myth).

Thank you in advance!!