I get those perplexing plateaus or even weight gain when I should be losing sometimes. For me it's always due to one of 3 things: A. Replacing fat with muscle, since muscle weighs more. B. Water weight before my period or after having too much sodium. or C. Starvation mode, because of too big of a calorie deficit. Apparently, if the body thinks it's in danger of starving it starts stashing away weight somehow. Not exactly sure how that works, but I assume it's true because there have been times where eating more made weight come off faster The tricky part is keeping at it when the benefits are not immediately apparent. It will pay off!

I would say do nothing. You are losing weight which is the goal. Also weight is just a number, being leaner is a much better way of judging success, at least in my book. I weigh myself once a week and it works great since I'm not focusing on just the number but on the lifestyle. I suppose if you really want to lose weight more cardio is the answer. Based on that 1.5 mile run that you did I don't think you're losing weight too slowly.