Early symptoms of varicose veins

I am someone who is completely ignorant about varicose veins.

I haven't paid much attention to my legs being thin so far, but it turns out that having thin legs isn't related to anything.

If I walk a lot normally, my legs hurt.. but the veins don't protrude.. Could this be an early symptom of varicose veins?

I am curious about what symptoms you have.