Can varicose veins cause burning leg pain during sitting?

Hi doctor,

I am 34 years old. I have had pain in both of my legs when sitting for about 12 years. The pain starts 15 minutes after sitting and it is pretty bad. There are itchy and burning pain between my calves and ankles and it feels like my legs are squeezed in this area. At the same time, there is dull and a kind of bursting pain in the feet and dull and itchy pain in the back and the middle of upper legs (nothing in the buttocks). Sometimes there are tingling sensation starting in the middle of upper downwards. It feels like I need to raise my feet a little bit from the floor and move them all the time. There was minor varicose vein removed on my right leg (no more visible veins there since then) and you can see the vein on my left leg but they are not varicose. When I stand up it feels like 70 to 90 percent of the pain is gone. There is no pain when I walk. Also, there is a tingling sensation when I lay down and bend my knees, so I feel these sensations from knees downwards. It feels like there is a problem with circulation but why it starts straight away after sitting? I know some people who have pretty bad veins on legs but they do not have that bad pain like me. It drives me crazy. Please suggest.