Ray,
If it makes you feel better, I too have bumped the scale up 2 lbs this week and I have been walking 4km every day at a brisk paces. Eating fish for supper and no sweets.
Don't let the scale dictate your improvement. Your body right now might be under the weather so yes a loss in energy will be normal. Keep working at it and you will drop the pounds if you simply just start eating right. Exercise is just the bonus to dropping the pounds and will strengthen your body.
You can do it Buddy, I have known you for 4 years and this weight gain didn't happen in a month, so chin it up............That is what I tell myself