I have a malformation in my leg in the front. i have severe pain, bruising, pain while exercising, extreme pain if you squeeze my calf, and my leg is very hard and swollen. ii had no trama except for a minor ankle sprain. is it likely i have compartment s

See DR ASAP: You may compartment syndrome but more likely a blood clot. See a dr immediately.

Unlikely : Your malformation is not deep to cause it , compartment syndrome, is a acute emergency need immediate attention to prevent muscle and nerve damage, seen after vascular and joint replacement etc, result of obst to venous return due to muscle swelling , builds pressure inside , cause severe pain, swelling, loss of function if the compartment is not released, immediately.

Pain: I agree - see a physician asap . Like make the call while you are reading these answers.