Home remedies are dependent on how long its been since the bruising occurred. And how severe the bruise is. DONT be afraid to tell your doctor. Use ice to restrict the blow flow to the area. But if swelling has gone down the apply a warm heat source to it. Like warm water as suggested. Use ibuprofen because it will restrict blow flow which decrease swelling and numb/block pain receptors that cause the pain sensation. Rest it. Because it walking will only make worse. If color discoloration doesn't disappear in couple of days then call your doctor. And take the anti inflammatory painkillers with consideration that with overdose can cause death or diease.