By five weeks, I was doing great and feeling like I was pretty much 100% back to normal.
Like Wolfy said, though, the car trips were rough as hell at first. Every bump, turn, stop and go was painful (possibly because I was very consciously stiffening up and trying to stay guarded) on the drive home post-op. However, the car ride four days later was hardly any better and I found myself feeling very uncomfortable.
Not sure if this will work for you, but try to sleep propped up either in a recliner or in your bed with a pillow arrangement. Side sleeping will almost certainly be uncomfortable or impossible, but sleeping flat on your back may also be difficult (I had this weird feeling of pressure and pulling in that position) for the first week or so. Since you'll be unable to take decent pain meds, any trick helps.
But yeah, like I said... by five weeks, you should be just fine. Just take it really easy the first couple of weeks especially and don't take any risks that would potentially lengthen your recovery time.