Losing weight questions?

My doctor said I need to lose weight, and I have been really healthy and exercising. I am 5'5" and I was 135 lbs but over the past week and a half I have been dieting and I now way around 128lbs. I do running, yoga, and strength exercises. My question is, what other things can I do to stay active? And I noticed the weight just being dropped in my stomach will my flabby arms eventually be tightened too with strength exercises? I'm going to try to get to 120 lbs or maybe 115 depending on how much I grow.