ajhondrngal,
I'm an engineer, so I don't do anything without over analyzing it.
I weigh myself every morning just before I get in the shower, this is my "official weight". I also weigh myself every night before I go to bed and practically anytime I pass my scale at home.
What I have found is that my weight varies drastically throughout the day (sometimes 5 lbs or more). I currently weigh 367.6 which is down 31.9 lbs since January 4th. That is an average of -0.68 lbs a day, but more importantly, an average of 0.13% of my weight a day. I have found that the percentage of your weight you lose over a period of time is a better indicator of your success than how many pounds. Someone once posted on this board that a good rate of weight loss is 0.1% of your weight a day (that's your weight times 0.001), so as long as I am averaging over that - I'm good.
For example, I also am currently going through a period of plateau, in fact I have gained 2.2 lbs since Sunday - eating the same as I was when I was losing weight. When I have times when the weight isn't coming off and I have not been able to determine what I am doing "wrong", I just keep going because I know that it will eventually start coming off again and until then I am at least eating healthy. I think that sometimes your body takes a few days and "adjusts". In your case it could be because you have started lifting weights.
Hang in there!
BTW, I have been McDougalling off and on for about 20 years. I realize that I am not McDougall's poster child, but I do believe if I haven't had the success that I have had, that I would be dead by now. Oddly enough, this has given me a great deal of experience starting McDougalling and losing weight. In fact, I have probably lost more weight than anyone else on this board, but of course it was the SAME 20, 30, or 40 lbs over and over again.
At some point (maybe this time) I will crack the code to figure out how to get myself to do this long term.
Joe