Hello, I would be happy to help you with your question.
From what you describe, this is no reason to panic. The presence of a small amount of bleeding and no cramping might simply represent "implantation
bleeding". Also, sometimes old blood appears like tissue and this can be very confusing. Here is what you need to do:
1. Call your doctor
2. Consider having them draw an hCG
level tomorrow and again on Friday
3. Consider asking for an ultrasound
at about 6 weeks, the earliest point that you can see a heart beat on ultrasound
4. If you develop pain or increased bleeding, call your doctor sooner!
I hope this helps and good luck!