Just had back surgery and getting married in 10 weeks!!

Hello my name is Megan and I am 26. I just had a second back surgery Feb 29th and I need to fit into my wedding dress!! I am 7 weeks out of surgery and have many restrictions. I am not allowed to bend/twist/run. I lost about 7 pounds right after surgery because of the medicine made me not want to eat. Well my appetite is back and I am gaining the weight quickly. I am frustrated with this being my second surgery and not being able to workout like I use to for a year now. I use to do triathlons and marathons and now I walk 2 miles!! Does anyone have advice to help reach this goal of mine to be in the 130's!!! 7 pounds to go!!