Hello!  Thank you for your question!.  The tummy tuck procedure is an  excellent method for contouring of your abdomen, often removing the  excess skin as well as tightening the abdominal wall.  After nearly all  surgical procedures, a potential space is created from where the  surgical procedure/dissection was performed.  This is especially true  for the tummy tuck, in where the abdominal flap is raised off of the  abdominal wall and then redraped atop the area to contour the abdomen.   The procedure alone promotes swelling and inflammation, which typically  lasts for 6-12 weeks.  This may even last longer if liposuction has been  performed in addition.  During this time, a few things may be done to  allow adherence of the abdominal skin/soft tissue to readhere to the  abdominal wall and close that space.  Many surgeons use drains to  evacuate the expected serous fluid from building up.  Stagnant fluid as  such may be a nidus for infection as well as does not allow the tissue  to adhere back to its normal anatomic position.  Drains usually are  removed once output is <30cc/day - usually removed within 3-4 weeks  on average, sometimes longer.  When this occurs, a seroma may develop -  which may require aspiration or surgical evacuation to rid this in order  to optimize your result.  This is not an uncommon reason for  persistent swelling and/or bulging in a certain area of your belly.  Of  course, thwarting the development of a pseudobursa, or seroma capsule,  is always best, to provide the best result as well as avoid any future  procedures for this.  This may be a troubling consequence and often  compromises your overall result.  Thus avoiding this complication, in  whatever manner, is the objective.  "Drainless" tummy tucks are becoming  more popular - basically, the overlying tissue is physically sutured to  the abdominal wall to close the potential space.  In addition, most  surgeons typically restrict vigorous activity/strenuous exercise as well  as lifting restrictions of usually <20#, especially the core, for  6-8 weeks to allow healing to continue.  Most also often recommend an  abdominal compression-type binder or garment, which will serve to  provide  compression as well as assist to decrease swelling and eliminate the  dead-space of the area for at least 6 weeks as well. Your binder should be worn snug and low on the hips as well as give compression to areas that have the swelling.    After the initial  binder, many patients like the Spanx garments.   Most patients are  able to return to most activities within a couple of weeks, provided  they adhere to the restrictions.  Overall, this is a procedure  with a high satisfaction rate.  Discuss the procedure and postoperative  instructions/restrictions with your surgeon, as these will vary among  surgeons.  Hope that this helps!  Best wishes!