Leaking

So I’ve noticed small amount of leaking over the last couple of days. It’s not to where my underwear are wet, but just a bit damp. Is there any way to check, without going to the dr, if this is amniotic fluid or urine? And is it a danger if it’d be these small amounts? I do have an OB appt tomorrow, so I’ll be asking then, but it’s always nice to settle the mind.