28 days...gained some ounces

Worked my butt off yesterday and my muscles are really sore so I am assuming that the few ounces I have gained is just temporary water weight. I am still in the 150 range so I am still happy. I just can't figure out why it's so hard for me to lose 20 pounds....can't I just get to 20? Please! Seriously my goal this round was 30 and I am struggling with 20. Oh well, we will see 15 days to go.