The up/down flucuation is normal and easily explained by whether you retained some water that week, or varied the fiber in your diet.
The fact you not losing weight raises a few items:
- are you accurate in recording? Get a postal scale to weigh things, and measure volumes carefully for a couple days. You may find overlooked calories.
- don't skip meals
- are you drinking 8 cups H20 daily? This oddly really helps me out.
- flip your ratio of carbs vs protein, so you control your insulin levels. Your grams Protein should be above your grams of carbs.
- add protein/fat snacks mid morning and afternoon, to keep your metabolism running. I like string cheese as a quick answer.
Goal 1 - Run half marathon in early June (run not walk)
Goal 2 - Drop 100 lbs total before my birthday in late June