My dad- age 60- has had a L4-L5 Stenosis surgery 2 months and 20 days ago. He stays in bed most of the time. He has now developed severe pain in his back ( the spot of surgery ) for about a week because of which he can not sleep at night as it gets worse at night. Pain also gets worse when he gets up of his bed ( going to the washroom etc ). There is also a TB infection in his wound but doctor says its not a serious issue, Dad is taking medications for that as prescribed by doctor. Is this normal ? How much time is it gonna take for complete recovery ?