you haven't changed your monitor by any chance? (or perhaps changed the settings on your monitor...?)
From my own (very limited) experience I have noticed that my images look quite different depending on what i am viewing them on (desktop, my imaging laptop, work computer, iphone etc etc).
i'm going through a repro phase as well. Now that im using new software (in my case PixInsight) there is so much more hidden in my early images from last year than I ever realised
