Have you talked to your doctor about this? You may think it's normal to swell but it sounds like it is happening a lot. I would get it checked just to make sure there isn't an underlying issue.
I have a bad knee that will cause one leg to swell. I use the 20-30 mmHg compression socks. If you look on Amazon they have some that are sized better. I am short and bought some that are sized as "short" so don't cut into my popliteal area.