Try to remember that the side effects are cumulative,then add to that the terrible heat in Melbourne today,and I'm pretty sure that it's just the chemo.I had my last chemo just before Xmas 2013, and just yesterday,I was reading the daily diary that I kept.On the 15 th January,31 days after my last chemo,I wrote that my knees were aching terribly,whenever I tried to ride my bike,or walk up stairs.I also had written that I was so tired throughout the day,some days had been worse than others.I can tell you though,that it does pass,but it takes longer than you think.I had the same chemo as you,and now,just over a year later,I feel FAnTASTIC!!!!Rest when you feel the need,nourish your body with healthy foods,drink lots of water,and try to get some gentle exercise.When the weather cools down,you will most likely feel a whole lot better.Cheers xoxRobyn