Hi all. So I have just completed w2r3 and my knee is absolutely killing me! I did r2 on Tuesday which is when the pain started so I left r3 until this evening and the pain is even worse! Is this normal? I did have a few knee problems as a teenager (37 now) but nothing super serious. I'm a complete beginner and haven't exercised in years! I have bought proper running shoes so I don't think it's that. Any advice?