To be honest I wouldn't bother with weighing yourself. Your weight can fluctuate so much in one day and muscle weighs more than fat. I'm hoping to lose some fat and gain muscle so i'm expecting to put on weight in the next 12 weeks. You're much better off measuring yourself. I can give you all the details of the proper places to do it if you need?

As for the apron belly it's impossible to spot reduce unfortunatly The best thing to do is just shed the weight, work on your abs to tighten the skin a bit. I have an instructor who is insanely fit and even she has a little wobbly bit from her kids

To give your system a little shock try to up the interval training you're doing to run (almost to the max) for one minute, jog for 5 mins, walk for 2 min something like that. Interval training is fantastic for beating a plateau!