Advice please

I got a BFP yesterday, I recently had a chemical pregnancy. In May, I've had two other viable pregnancies. Today I've noticed I'm spotting. I've called a doctor, but they won't see me until I'm at least 10 weeks. The blood doesn't fill a pad, but it's there when I wipe and its red brown (sorry) I took a test again and it's still positive. Am I worried over nothing?