Pinky,
A couple of things that have worked so far for me. First TheDailyPlate is a great site for keeping track of calories! And as far as calories in things you make at home, what I have been doing is I add up ALL the ingredients as I put them in. Then I total the calories for the entire thing (in your case the tune salad)... then decide how many calories I am willing to spend on whatever it is and divide the dish accordingly (zip lock bags are awesome for this). Say I total something as 1000 calories but I am only wanting to spend 250 on it... I will seperate it out into 1/4ths (approximately) and zip lock bag up each portion and use a sharpie on the bag and write down how many calories are in that bag. takes about 5 mintues more to do this, and then I have several meals I can count on! Just an idea.
Also, as important as exercise is, keep in mind (I have heard this time and time again) that diet is 90% of weight loss. So hang in there while your foot is healing and go to town on the water... the more you can flush out your system the better!
Scale isn't being nice to me this week... I was down .5 earlier this week and was up the next two days... I am sure stress from earlier this week (as well as TOM) is a major factor, so I am trying to hang in there. My mom is doing the relay for life tonight at one of the local high school stadiums, I think I might go tonight and run/walk with her. I am not sure how much she will be able to do since she just had chemo on Tuesday, maybe I can take her place and do the walking for her if she isn't up for it.
Everyone have a great weekend!

I also set up "meals" for myself on it, things that I eat all the time, so I don't always have to reenter it. Enjoy the relay for life tonight, it's such a great event.

...but that is another story I am sure I will talk about later. 