This is unusual. Especially, the bleeding six days afterward. Are you sure this is a muscle belly tear and not an Achilles issue? Here are a few questions for you:
Is this getting better over time? If so, and assuming this is not an Achilles tear, you are probably not doing it any grievous harm.
Obviously pain needs to be your guide, but realize that sometimes things may hurt on the road to recovery. Do you see bruising after squatting?
If you were to do three sets of eight at 95 pounds, would it hurt?
Getting a proper diagnosis would not hurt, although if it is just a minor muscle tear, you already know what you need to do. Maybe something will pop out to some of our other esteemed readers.