I know the feeling the bigger the crack / click the more comfortable it is afterwards! I get this all the time now but neither my physion nor my OS seemed too concerned when I first told them about it (which was months ago I guess).
Also, went a bit rogue yesterday and tried my first!!!!! BJJ sparring session since the accident. Was very apprehensive since some people say they started light sparring after 6 months and full after 8 months other say they started light sparring after 9 and full after 12 others again seem to say that it would be madness to start anything before 12 months at all.
In other words I had no clear guide lines other than that the OS said the ACL would definitely be pre-op strength by 9-10 months and my muscles seem pretty strong, in some areas better than ever.
At any rate so I tried sparring yesterday and whilst my performance in terms of success and conditioning / cardio was DEVASTATING, I felt no trauma other than "normal" sparring impact on the knee...
Today it is strained but not more so than after my mud track run or a very hard plyo leg session etc. as far as I can tell. Other parts of the body (back) / bloody lip seem to feel the strain a lot more.
I am however slightly worried that I have over-reached myself and I will monitor myself carefully over the next week (even though I did a cheeky 12k run this morning)