How to Get Rid of Pannus(fannypack)?

You are doing everything right. Diet and exercise will get you to your goal weight but your skin will not contract.

There are a number of options to help you achieve your goals. An abdominoplasty will address the excess skin of the abdomen. Liposuction will help with the "fanny pack". You may also be a candidate for a lower body lift which will address the contour of the abdomen, outer thigh and buttock.

Seek out a board certified plastic surgeon to help you understand your options.

I hope this was helpful. Good luck

You are on the right track.  Keep on your diet and exercise plan to reach your goal weight, and you will have done all you can.  Beyond that, extra skin and abdominal wall stretching from your weight gain and pregnancies will NOT go away without surgery.  Don't be afraid of a tummy tuck... It is a fantastic procedure, and can do for your body in ONE DAY what you will never ever be able to do with all the dieting and exercise in the world.  We transform moms daily, and learning more about the procedure, as you are, will incentivize you further to reach your goal... You CAN have your smokin' body back!