How could you tell if your water breaks ?

Lyneshia • 19 ,due in September 💙👶🏽
TMI: I woke up this morning and my panties were soaked , I thought I peed myself so I wiped and put new underwear on . Well i have a big wet spot on my new underwear . Just wondering if it sounds like my water broke or just discharge . I've put a pad on that I'm gonna check in an hour .