Thank you so much for your reply, Rafaella!! Your analysis is pretty spot on!
It's been more than 2 weeks since I posted the chart, and i had kind of given up on the thread..
So, yes, the doctor I went to see gave a wrong diagnosis and the medicines he prescribed did have strong side effects, they made me feel dull, moody and depressed. He thought there was an inflammation of the nerve. My own feeling had been that it was an inflammation of the tendon, and i consulted another doctor later who agreed with this and told me to stop taking the other medication and just take anti-inflammatory painkillers for a couple of weeks, plus ice, rest and a knee-support bandage.
I used ice and took the painkillers for a while, because i had a lot going on at the time, it's been up and down, worse-better-worse-better.. finally during the past few days I've been able to get more rest and it seems to be improving, so i stopped the painkillers and started taking some ayurvedic supplements a couple of days ago. Using a knee-support bandage is giving some relief as well.
And yes, things have been emotionally stressful during the past few weeks, prior to my knees getting bad, not as bad as traumatic, but quite intense, and I'm sure this also has a lot to do with it, since it created so much tension for me. I'm still processing and sorting out what happened and how to deal with it, but it's slowly easing a bit..