Hi, Congratulations 7lbs lost is great.
I watched a program recently on a woman trying to lose weight, she exercised regularly but because she was repeating the same exercise routine she was just maintain rather than loosing. One of the main pieces of advice she was given was to do more exercise that build and strengthen her muscles as this was vital to her losing weight. Another big piece of advice was to drink plenty of water.
Hope this helps but I am no expert.