Not an injury you want to have.Its the one that just ended my playing days this past week
Typically,it can be pretty painful from the onset. As time goes on,you still feel tight,and generally a discomfort in the lower back,whether its standing long periods of time,or even something simple such as sleeping on your stomach.
The textbook recovery is 12 weeks. I have had this injury 2 different times,Junior and now senior year. The first time It did take only 3 months,and then some rehab. This second time,it has taken 7 months and counting. You will be put into a brace,that goes from roughly the bottom of your belly button,to right under your pex. It is not pleasant,its bulky,but you adjust eventually.I wear mine all day,until I shower each morning and night.
The doctor will likely tell you that you can still work your upper body with light weights.Avoid this for the first 2 months,because you will regret it. Look into getting a bone growth stimulator. They are expensive,but it has helped me some now,just very slowly.
When you are released,its so important to take it nice and slow.I will have back issues the rest of my life now,because I rushed back the first time,and really went at it hard in the weight room.
some problems include never really feeling like you are stretched out before games,and tightness on cold weather days. Other things include some days you will just struggle to swing,because you will just feel "tight". After you do heal, you generally feel very tight,most of the time.One thing that helps is whirlpools and heated pads.