bright yellow wee?

hello ladies! i came of the pill last month to try and concieve, my cycle normally is 28 days I was due on 16th of June how ever I'm still not on making me 3 days late, iv taken 2 test and both bfn but recently my wee has been bright bright yellow when I wipe on the tissue. And I mean so bright. what does this mean? could this be a in crease in pregnancy hormone or is that just wishful thinking ? Thank you x