think my water just broke

vagina contracted and some fluid came out while laying in bed. figured maybe it was urine. went to relieve my bladder and tried to lay back in bed. as soon as I plopped down more fluid came out along with some watery blood. is it safe to say it's showtime? UPDATE: It was my water. not dialated so pitocin has started. wish me luck ladies. can't believe today is finally the day.