Welcome to HCM.
You can apply a ointment thrombophob ( heparin
benzyl nicotinate ) locally over the bruise
to reduce the inflammation. The ointment will help to increase the blood supply over the skin.
Application for 1-2 days should help the bruise/ lump get well.
However, if there is no change get clinically examined to rule out any fluid/blood inside the lump.
Wear lose fitting cotton clothes for comfort, avoid lifting heavy weight or doing strenuous exercises. Take care.