The pain in my leg? help please?

yesterday I had a pain in my calf like there was a iron instead of the vein. by time ıt started to feel like there was a lump. when I slept the pain went away but when I started to walk ıt came back
I think it's about the vein in my calf
last week I started working out for the first time can this be the reason? I have to work out according to my program but should I? I feel like the vein is gonna tear ıf I move to much
should I work out or not?

The pain in my leg? help please?
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