Get a specialist to give you advice not your family doctor e.g.
sports medicine doctor or physiotherapist. Ask specific questions like "how long until..., When will I know I can return to my reg. workout...? What will happen if...?" If you don't get an answer you are clear on ask them to explain it further.
If you've had a sprain that caused bruising, you'll need to heal it properly to reduce the scar tissue build-up. The lump is often low grade inflamation. Ignore it and it could lead to premature arthritis and limited range of motion without pain. BTDT