Black and Blue...but is it working?!

So my Chiropractor is doing myofascial release, along with message and a wee bit of laser on my knee. It is incredibly painful (the myofascial part) and has left my leg literally black and blue with bruises. Owie. Initially, my leg felt "freed up" and I went for a glorious 7km pain-free run. Then I had another session and the results were less than awesome. Albeit, it is incredibly humid around the city at the moment, so I can't blame my crappy run on just one thing, still. My leg felt like I had DOMS and my ankle decided that it would swell up-yay :-/ Even with that though I squeaked out another 5k run. This Navy 10k is happening, so I'd better be ready (that's what got me out the door yesterday anyhow lol). Dr. Google has mixed feelings about this black and blue thing. I am pretty sure I bruise fairly easily, which I blame on fair skin, but is it normal?! Some forums say yes, it is pretty common, although I don't know if they mean a tiny little bruise or the ones I'm currently sporting that run down my leg from the thigh to the calf? Others say heck no, they're doing it wrong if you bruise, you should go lighter. To that I wonder, is that just a reflection of general society's view now that any therapy should be as pain-free as possible? I disagree and know that sometimes a bit of pain, or yucky tasting medicine, is the best way to go, even if it makes you scream at hilarious octaves. Either way, even with the bruising, my knee feels more mobile and less painful overall (no more stabbing pain all day, every day!) so I'll keep up the Chiropractor routine for a bit longer, I just hope I don't need to wear a swim suit any time soon lol.