Thanks for writing to us.
From the description it seems you developed a bruise
. This could have occured due to trauma( which went unnoticed) or may have occured spontaneously( seen in some people). At present there is nothing to worry about, its already resolving. Resolution of bruise can be assessed by color change. Initially red- purple- green- yellow, then resolves completely.
So do not worry, its almost resolved. To hasten the process sometimes vitamin k based creams, heparin
based creams can be given. But i do not think, right now you need to apply these.
Hope this helped.