I hope I don't sound too stupid, but I think I have done something to my middle finger and it's bugging me!! I can bend it, but it hurts ( not screaming agony, just sore) It feels bruised but htere is no bruising to be seen. If I touch it, the middle section hurts, between the knuckles. It isn't swollen. I noticed it first about a week ago, and it has got neither better nor worse since then.
Diagnosis anyone, please?