I've had early spotting that has gone both ways. With DD I started having bright red FLOW with cramps at about 6.5/7 weeks, the ER doc told me to go home and wait to miscarry even though we saw a heartbeat on the sono. Spotting and even some bleeding continued on and off until about 11 weeks - it was a Subchorionic Hematoma. They're incredibly common, and most have very healthy pregnancies once they resolve. My last pg started spotting at 5.5 weeks (23 dpo) which progressed into some lightish bleeding with clots and bad cramps, and turned out to be a loss.
It can really go either way.
I'd say go with your gut and if it really worries you, call your practitioner and get it checked out. And if they blow you off (as my midwife did with my loss) and you still don't feel right about it, call another practitioner. But if it's just a tiny bit of spotting you're probably just fine and should try to stay positive. I know, much easier said than done. Big