Brown spotting

Hi mummies. I'm week 6 and day 2 pregnant. Pero yesterday nagkaramdam ako ng matinding cramp at brown spotting. May naka experience po ba sa Inyo ng ganito? Normal po ba yon? I had my first miscarriage at ayoko mangayari ulit yon. Week 7 pa yung first appointment ko and now sobrang worried ako. Please any advice po.