(Concern) Swollen legs...

In the morning, my legs feel completely fresh, but after waking up and being active for an hour or two, my calves start to swell and become thick and hard. I went to the hospital twice for tests, but they said it’s not varicose veins.

Still, I always wear the compression stocking.

Even if it's uncomfortable, that's how it doesn't swell...

Since it's summer and hot, thick compression stockings are very uncomfortable. Is there a good way to deal with this?