peeing while masterbating !?

so i’ve never orgasmed, not during sex or masterbation, head or anything. so recently i’ve been trying to use my vibrator more so i can finally orgasm and better communicate to my partner what i need. however this is so so weird whenever i feel like i’m getting close to orgasming i relax (it’s a huge build up so i try to relax so my body can cum) but i end up peeing!? and yes it’s pee not me squirting or anything like that. im just super confused why this is happening lol. anyone ese have a similar experience!? any tips on how to orgasm.