I get this something rotten, my dad does too (especially if he's had a drink drives my mum mad lol).
By about 8/9pm I just can't sit in the same position I constantly move my legs around as I just can't get comfy and it drives me and DH up the wall.
If I go to bed and watch TV and lie straight it seems to ease up.
Don't think there's much you can do about it
Cx