A seroma, or fluid collection, 6 weeks after your tummy tuck needs to be drained. This may be done with a needle, with a new drain, and possibly with surgery. Leaving this seroma can lead to infection or a chronic problem and poor cosmetic outcome. You should contact your surgeon and be seen immediately to have to taken care of. Hopefully during your routine post-op visits, your surgeon has recognized this problem and has sone something to help it. See your surgeon and have it dealt with or you may wind up dealing with long-term issues and revision surgery.