Help possible miscarriage!!?!!!

I am 6 weeks and 5 days along today and this morning when I woke I went to the bathroom. When I wiped I had bright red blood on the toilet paper and when I looked in the toilet it looked like I had passed a blood clot about the size of a quarter. There's no longer bright red blood just a little spotty of brown when I wipe. Did I miscarry? This is my second child and I had to issues with my first 10 years ago. I'm waiting to call the doctors office at 8 but have been panicking and crying thinking the worse for the past couple hours!!! Any of you experience this?