Based on my wife's experience, I think you should expect the first 7 days to be really bad, but it will start getting
better after that.
But, of course, everyone is different. Maybe it won't be that bad.
Are you walking on it regularly (several times a day)? As crazy as it sounds, she found that getting up and moving around actually helped with the pain.
Good luck, man. I'm sorry you are going through that.