I went to the er about 2 months ago because out nowhere I rubbed my inner thigh And felt a lump...the dctor at the er said it was a hematom and that it will go away over time. It is 7cm x 4cm. The bump is still there . PAINLESS AND NO BRUSING THE WHOLE TIME I'VE KNOWN IT WAS THERE....was I missed diagnosed? Is it a tumor???