your levels could still be too low, or you have a test that cant test the levels that are appearing...things really sound promising for you! especially the constant need to wee

that is one handy side effect of being pg =) i would say, like the others have already suggested, test again and see what happens! but wait a little bit of course...and if you used a cheapie one, you might want to get a nicer one just to be sure =) GOODLUCK!