Don't get too frustrated. It could just be that you ate something higher in sodium and are retaining water. The run not going as planned could have something to do with your discouragement from the weigh in. I know when something is getting me down I have a harder time relaxing while running. Just keep at it. Go at YOUR pace, if you need to repeat a week, or move backwards, don't sweat it, just do it. This is your life, your pace, no need to push yourself to the point you just get frustrated and give up.
Tomorrow is W3D2...
I'm a work in progress.
I was a little concerned because of the cramping from my last run, but I think I figured that out... I started consciously lifting my thighs higher and taking some of the effort off of my calves. Big surprise (not really
) no cramping!! I think I was just letting my calves do all the work and they were not happy! lol I felt so much better that halfway through I bumped the speed up (still slow, but it is progress!) a little. So today I did 1.2 miles. Doesn't sound like much but last Sunday I only did 1.4 miles and todays workout was 10 minutes shorter! Sundays are my "long" run days. I was excited to see the progress. So now as I sit at work I feel great. I love the feeling that I have after I finish running. And I'm starting to think that 10 miles may not be as ridiculous as it sounded initially.
Just keep doing what you're doing 
But I will keep moving. I am thinking that I need to work out more frequently during the week because currently the only consistent thing about my workout schedule is running. I think I need to add 3 cardio days so that I am working out at least 30 minutes a day, 6 days a week. It is just hard because that would mean working out at 4am 2 days a week.
At first I felt really good so I tried bumping up my speed some for the run portion, but keeping the walk slow. Then my right calf and shin started cramping. So I slowed down a little but that did not help. I got off the treadmill and walked around a little and that relieved it but as soon as I started up again it came right back. So I got mad (easily frustrated today
) and quit. I know that my water intake has not been enough for the last few days (too much corned beef
) so I don't know if that is part of it or not.