Its just too hot

We are having a proper summer just now with temps up in the 30s Celsius. I am the first to say I don't like the cold but my previous tolerance for the heat seems to have disappeared too.

My bedroom is upstairs, and faces a direction that means thus far I have failed to keep it cooler in any way, in fact it seems to be the hottest room in the house :(
Not very helpful when it comes to resting up or trying to sleep, even at night as it doesn't cool down much either.

It is just too hot for me, my foot feels like it is so swollen that my skin could explode (it doesn't look swollen though so that is ok) and doesn't help the burning pain. I'm cranky from pain and lack of sleep and just wish I could stop hurting for just a little bit, I'm tired of all this...I'm hoping that this weather doesn't last too much longer as a few cool days would be appreciated-not just by me but I think a few people!