Being pregnant and hot not a good combination

I am all for nice wheather and it being warm Im glad it's cooled down just a little the past week or so it has been extremely hot and our central air is not working and being in the last month of my pregnancy I've been so miserable. We have it set up on Monday which is when we get paid to have someone come out and look at it to see what's wrong with it, I just hope it doesnt cost an arm and leg to get it fix. I do hope we can get it fix cause if not this last month will be very miserable it's been so bad that I cant sleep at night so I am really keeping my fingers crossed that it's something simple