I wonder if this is a symptom of varicose veins

I have a question about varicose veins symptoms. After sitting cross-legged, I often get cramps in my right leg. I've even woken up suddenly from sleep with numbness in my right leg. When I come home from work, my right calf feels heavier than my left. I don't see any bulging veins or anything, but are these symptoms actually symptoms of lower extremity varicose veins? I'm wondering if I need treatment.