I recently noticed a baseball size and shape bruise on my lower back. I don't know how long it's been there because it doesn't nor has it hurt at any time. I don't remember hurting myself lately either. Should i been concerned and call my doctor or just let it go and see if it goes away?
Well, as far as my opinion is concerned such unhurting bruises are a cause for concern. They can be very dangerous at times. I would suggest you to consult your doctor immediately. Do not take it non-seriously.