Help please

Rianna • 18 years old.xx
I know this is a long shot but I'm 18 and thought I was pregnant about month ago but thought wasn't but I started bleeding yesterday but thought I was just coming on but I'm leaking though pads and everything , I'm in so much pain and woried that I'm having a misscarrge , sorry 1st time and don't know what to do 😭😭😭