I think I'm having a miscarriage...scared please help

I'm 6 weeks 3days and I just found out on the 10th that I was pregnant I scheduled an appointment with my OBGYN and not til Tuesday. last night I used the bathroom and when I wiped I saw light pink, went to bed felt fine and this morning I woke up needing to pee and when I wiped I saw light pink than followed by a lot blood like I just started my period it kept going and going. later I used the bathroom again same thing, I had no cramps I put a liner on and it filled up then I used the bathroom again no blood in toilet just when I wiped and just now I felt a gush of something so I ran to the bathroom and I passed a blood clot the size of silver dollar. I'm so scared any advice helps trying to avoid a large ER bill.