Brown light spotting w little brown specks at 7 weeks? (Tmi... No pics, I promise)

Nicole
Hi everyone. I went into my OB on Friday for cramping and light brown spotting. We saw a good heartbeat and solid growth and my cervix was closed (phew). She was 'cautiously optimistic'.  Yesterday and this morning I've experienced light brown spotting (pretty clear) with small brown specks throughout. Has anyone experienced this? Was this part of a miscarriage or normal, healthy pregnancy for anyone? 
Thanks so much for the input.