Last month, I injured my knee while sledding in the Oregon mountain snow with my incredible wife. Upon returning home, I iced my knee to reduce swelling, wore a tight knee brace, and remained still for a couple days. I guess you're not supposed to do that because it caused a blood clot in my leg which can be life threatening.
Shortly after, my calf started killing. The pain became so excruciating that I couldn't walk, so I went to the drug store and bought a frickin' cane and hobbled around like that for a week. At the time, I foolishly thought I'd simply pulled a calf muscle.
The pain didn't subside, so I saw a doctor. A blood test was taken. The results indicated a possible blood clot, which an ultrasound confirmed.
About a week later, I found myself in the hospital with mighty chest pains, a suspected pulmonary embolism. Doctors whisked me away, connected electrodes, ran an electrocardiogram test, put me into a computerized tomography (CT) machine, did a D-Dimer Blood Test, and performed another ultrasound. Fortunately, embolism was ruled out and it appears I had a severe panic attack WTF.
So after a few freaky weeks, I'm back to work. I'll say it again, God bless doctors and their machines.