I grazed my knee 4 months ago while walking home.

It seemed to be healing fine but after a month when the skin came back, the wound started to grow pinkish and puffy/swollen and has been this way ever since.

Is this a bad thing? What should I do?

And your doctor says??

I couldn't afford the doctor right now unfortunately.

It's the only way to know what's going on. We can't diagnose you online so if it's bothering you or you are worried, you will need to see a doctor.

Okay then, thank you all for your answers.