You have heavy periods. In women, the number-one cause of iron deficiency is too-heavy periods, says Jacques Moritz, MD, director of gynecology at Mount Sinai St. Luke's Roosevelt in New York City. They lose too much blood, replace about half of it, and then lose too much again the following month, he says.
My motherboard is always around 37-41 degrees Celcius when the computer is idle. I was told in one of these posts that it was not dangerous. Since you are in the 33-34 range, I assume thats good. My CPU is always between 28-33 degrees Celcius (I am using stock cooling)
A motherboard could support 64-bit processors, but you could also plug a 32-bit one into it if you didn't need/want/afford 64-bit capability. For question #2, there are several ways to determine whether the processor is operating in 32-bit or 64-bit mode.