I've been struggling with a painful knee for a few weeks now. I'm unsure of what I've done to it exactly. The pain is a constant niggling ache in my knee and at times radiates down towards foot. For the last few days I've had a noticeable lump when bending my knee (it's the outer side of my left knee). It's a softish lump that disappears when my leg is straight.
I'm not in agony and I'm managing to get around (school runs etc) just wondered if anyone has had similar. There's no heat or bruising from it. I'm in my 40s and carry extra weight so I'm well aware that a GP will advise on lifestyle.
I've added an image of the lump for reference.