Difference between spotting and HEAVY bleeding?

These were from wiping, 2 minutes apart. Is it considered spotting or heavy bleeding? It’s slowing down now, but still there. Went to the doctors today and baby was active and heard the heartbeat. Doctor didn’t seem too concerned and said it could possibly be the beginning of a placenta previa, but likely will resolve on its own. Still so so scared. I go back to the doctors next week, but I’m full of anxiety and need to calm down. Anyone have positive outcome stories???