Gained weight and inches?

This summer I was very active roller-blading and bike riding. I lost maybe 10 lbs. Then I decided to vary my exercise and took one month of cardio kickboxing. I immediately noticed a difference around my legs and hip area. Unfortunately, I took a 2 month break through the holidays and picked it up again in January. It has been 6 weeks that I have been religiously doing cardio kickboxing on a daily basis. I was at the Doctor's office and was mortified when he said I had GAINED 11 POUNDS FROM LAST SEPTMEBER!! Later that day, I measured myself because I figured it must be muscle gain, and I had gained an inch in my bust, waist, hip and thighs. What is going on? I usually watch what I eat as well. I have never gained this much even when I wasn't exercising. My husband says I look the same. I am 5 feet, 134 pounds as of last week. :(