37 weeks, 50% effaced.. Leaking fluid or baby on bladder?

Doctor told me to go to the hospital if I start having contractions, leaking fluid, baby stops moving, or if I have any bloody show. While brushing my teeth, fluid began coming out of me. It wasn’t a ton, but it was enough to make me need to change my clothes. It had a slight smell of urine, but seeing as this is my first baby, I just don’t know! How do I know if I’m leaking fluid or if baby just made me pee myself? 😣