Acl standing pain

Im officially 8 days post op and the pain laying down has been pretty tolerable and im still on painkillers. Sleeping sucks so much but its been getting a little bit better. But the pain while I'm standing is just so unbearable, Its the worst pain I have ever felt. What can I do to make this better? Is this normal? Does it go away with time? Its so hard to do some of the exercises because I have to stand for it and I cant really do the suggested amount of reps because of the pain.