I'm a 23 year old woman and I occasionally have problems with my left leg and my right arm feeling swollen and heavy. They aren't swollen, but it feels as though the circulation is being somewhat cut off (or something like that). It happens at random times and sometimes just taking low dose asprin helps. Other times asprin, ibuprofen, or acetaminophen does not help. This can last for a couple hours up to a couple days. What could be causing this?