I don't know what CD you're on, Teagz, but when I had implantation bleeding I also thought it was too much to be implantation bleeding. Even though it came 4 or so days before AF was due, so I had no idea what else it could be. But it lasted 3 days for me and was much as you describe it -- EW mucusy tinged with quite a bit of blood, often pink but with bright red strings. Several of those details fly in the face of what all the Web pages say implantation bleeding should look like -- they all say brown spotting for 1 day only.

I always avoided alcohol for the most part during the 2WW, even though they say that that isn't even that important. The baby's circulatory system doesn't merge up with yours until late enough that even in super careful "not a single drop of alcohol when you're pregnant!" Sweden the docs say that alcohol before getting a BFP is not a problem. I imagine the same goes for heavy lifting and such. But if you feel uncomfortable about the lifting at work and are a good white liar, I might suggest an elbow injury?