Six months after most cosmetic procedures one can expect the appearance of the surgical site to be very close to the final result. In other words, your pooch should not be due to swelling or unresolved fluid collection at this point. Having said that, it's never a bad idea to have your plastic surgeon examine the area of concern to make sure there is nothing abnormal. Usually the small pooch above the transverse scar that remains or develops after abdominoplasty is due to residual excess fatty tissue. Exercise designed to reduce overall body fat may certainly help the area (with the added benefit of contributing to good health). If a safe weight loss plan does not target the area to your liking, it may be necessary to perform some liposuction to get rid of that pesky fat. In some cases, a bit more skin needs be removed as well in order to smooth out the area. Hope this answer helps you out.