Embarassing pee story *tmi*

So...I'm on cervical rest due to a marginal placenta previa. Last night I had restless legs and sometimes the only way I can get it to stop is to have an orgasm...so I began to manually stimulate myself over my underwear and I peed the moment I started to get turned on! At least I think it was pee?  It wasn't a huge gush but I had no idea it was happening until I felt warm and liquid dripping down my bum (I was laying on my back). I'm 19 weeks...is this normal? So embarassing!!!