My calf kept being sore which sometimes happens after a bad cramp. I decided I'd massage it to make it feel better. But even though I massaged it, it didn't feel any better at all. I went to a hot tub to warm it up, and somehow it felt worse. I started to get concerned, but I put on a compression sock and waited for it to improve. But one day while playing StarCraft it started to hurt a lot. I couldn't wait to finish playing the game so I could lay down. The pain was agonizing, the worst calf pain I've ever felt. I didn't get up except to go to the bathroom for a few hours. I eventually drove to the hospital and waited for the doctor to examine me.
The doctor touched my calf for half a second, said my pulse is strong so I probably don't have a clot. He then diagnosed a strain and then prescribed me a muscle relaxant and a pain medication. I started taking them. I didn't feel as much pain, but one day after a long session of StarCraft I looked at my foot and my entire lower leg was swollen. I earlier read that if I got further swelling that I needed to go to the hospital again. I put on my compression sock and went again.
The first person who looked at me (probably a nurse) again touched my calf for a second and said it's still probably a strain. I told him that I was concerned about the swelling so I saw a doctor in an examination room. He thought I might have a calf tear, so he touched my calf, but what he did differently is he moved my heel to stretch my Achilles tendon. Because I didn't have any pain from it, he ordered an ultrasound. He said "when we don't find anything, I can't really help you". It didn't really look like a clot upon examination. But after I got the ultrasound, they found a blood clot in my vein. The doctor was amazed. He said he hasn't seen that in twenty years.
I'm 30 years old. I don't smoke, I don't do drugs, I don't have a history of blood clots. I've never had cancer or a stroke. I have a 22 BMI. According to a calculator, someone with my profile only has 3% chance to have a blood clot. The only risk factor I have is sitting for long periods of time to play StarCraft.
Check my stream lengths: https://www.twitch.tv/iopg/videos/all
I was streaming for 12-16 hours when playing SC:R only getting up from time to time to get water or go to the bathroom.
Now I have to inject myself in the belly with a blood thinner medication every 12 hours. There is a chance the clot breaks off and goes into my lungs causing a pulmonary embolism which could kill me.
Remember to not let blood pool in your legs for prolonged periods of time. Do not sit without getting up to walk around for more than an hour at a time.