Clitoral Stimulation

Ok so I'm 33 weeks pregnant and about 2 weeks ago I went into preterm labor. Luckily the doctors were able to stop the labor. I was put on bed rest for the remaining of my pregnancy, that includes NO SEX! I am so horny and I need some kind of stimulation!!! Would it be ok if I had an orgasm through clitoral stimulation or do you think that would trigger preterm labor?? I know this is kind of a no-brainer, but I have a little hope.