Noticed a weird pain in my lower calf yesterday, it hurt a bit to walk, like the painful area felt tight, almost like a pulled muscle. Tender to touch.
No swelling.
Today it's a bit better and I've done a 20k run. Still aware of it when I'm walking. Area is now slightly red, very tender to touch like a bruise.
I haven't hurt it or been injured, what could it be? No other symptoms. Very fit and healthy otherwise.