Hi, thanks for writing to HCM.
From the description, I suspect that you could have suffered a possible tear in the muscle fibres during your workout's resulting in the formation of a large bruise
Most muscle strains can be treated with the RICE protocol
. RICE stands for Rest, Ice, Compression, and Elevation.
Rest -Take a break from the activity that caused the strain.
Ice - Do not apply ice directly to the skin. Use cold
packs for 20 minutes at a time, several times a day.
Compression -To prevent additional swelling and blood loss, wear an elastic compression bandage.
Elevation - To minimize swelling, keep your leg up higher than your heart.
If you experience loss of strength and weakness in the involved muscle, you may need a surgical reconstruction.
I suggest you to consult an orthopedic sports medicine
specialist for further evaluation and management.
Hope this information is helpful. Good day