I am in the almost same situation. I tore my ACL and everything else in there and ended up with two surgeries later still having the pain. I injured it back in 2010. Doing really nothing athletic other than trying to lean over and unhook a hot wire fence between my legs as I was leaving the pasture with the horses.
I have went through all the rehab and was released after completion. Dr. released me and said it was solid in there when he examination. However, I can barely walk for any amount of distance other than in my house. If I sit for too long it about makes ya sick to try and stand due to the pain. My knee clicks and pops constantly and will at times give out and snap backwards. Even first thing in the morning after sleeping my first step you never know if it is going to be painful or not. I can guarantee the third one is when it starts to ache in the front and the back of my knee and I limp around the house. By evening I have to put it up on the couch and take some medication to stop the pain. Heat and Ice have helped but not gotten rid of the pain. I can't help but to wonder if there is more damage there now. There were a few falls here and there due to knee locking. I had to change careers and also started a new business where I can sit or stand as I please to get the work done. However, after a day at work it takes me at least three to recover enough where I don't have as much pain. My other knee has now started to ache badly since it is been working over time. I'm tired of pain medication and not being able to do normal things. I am only 38 and feel so depressed about my condition. I am over weight and don't know how to get it off because exercising is out of the question unless I want basically bed rest for the days after.
I can't go in the pasture because of uneven ground and can not ride because I can not pull myself up into the saddle due to the knee injury. I am stressed, mad, depressed and just plain angry. I have now had to file for disability just to get some financial assistance coming into the house. Not feeling like a real winner.