<s>[INST] I fell about 4 months ago directly onto my right knee. My knee is still bruised, although not nearly as bad as when I first fell, and hurts when pressure is applied. It also gets achy when sitting or driving too long. My doctor doesn t seem concerned and just tells me to take ibuprofen. Can it really take this long for a bruise to heal and at what point should I get concerned that it could be something more serious. [/INST] Hi I have noted your concern about time taken for your bruises to heal. Normally Bruises heal in 3-6 weeks time . But in certain cases they take longer. I would suggest that you start doing Quadriceps exercises ( muscle building exercises) as these will help in faster recovery. If you still feel pain after 2 months then go for an MRI to see for any internal damage. </s>