NO weight loss for 1.5 weeks

I think you should just keep following your plan.  This is just the way it works.  And yes, sometimes you might even  go up a pound or two.  At this point, that usually just means you're retaining some water.

As Kelly said, "follow the plan." I am coming off of a 5-6 week stall, and this is the second one since surgery. It happens, but if you follow the plan things will turn around and you will continue losing.

This is they way it work and it will happen again throughout your journey. Just do what you are supposed to do and trust the process. We feel like we are successful when we see the numbers on the scale go down and it can be frightening when that stalls and make us question what we are doing. If you are following your plan, the weight loss WILL start again. Just hang in there and don't worry about it. I know that is easier said than done. Stalls are hard but really all you can do it ride them out. 

For me, even one week out, you don't have enough protein in your choices. You are eating a lot of really not too terribly protein dense foods and I was able to do 8x8 water at this point as well. 

And if you know your weight at 1.5 weeks, it tells me you are weighing more often than you likely should. If it stresses you out--stop weighing! If you can handle it, then weigh.

I weigh weekly and that is it. The first 30 days I was required to track my weight daily, but other than that, once a week. Period. 

You are not the one patient that won't lose on RNY. Just give it time and keep to plan.

Hang in there sista keep on sipping ... up your fluids if you can and make sure when you void it is really light in color ...  keep your protein on target ... I had those very same issues one or two weeks with 0 loss and then mega drops on the scale to make up for it.... just stay the course ... it will happen for you ... add a tape measure to your arsenal ... when the scale does not budge count on dropping inches ....... you got this! I am rooting for you!!!