It could mean lots of things. My brother has an awful cold atm. its the hottest its been in a long time.
Labour will come when you are relaxed and not worrying about it.
It's like the tww all over again. I know its different but I came down with horrendous flu like symptons in my tww, and ended up getting my bfp.
It's amazing sometimes how your body prepares and lets you know things.