I have studied your case.
As you are not injured so reason of bruise
can be due to blood clot
or it can be due to underlying skin disorder.
You may need to consult your doctor so that he can locally examine you and prescribe medication accordigly.
Leg pain can be due to deficiency of B12 ,calcium or may be due to spinal disc bulge.
You may need to investgate further.
Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries.
Wishing you good health.