I have a hole in my incision. It is a little red and some yellow pus is coming out. Should I worry about this? (Photo)

Although it is not very common after a tummy tuck, sometimes wounds do occur. There is some mild redness but nothing very significant from your pictures. It can be concerning from your standpoint, but do not worry about this. Your surgeon has seen you and given you a plan for improvement. I would see you back in about a week or 2 to make sure that the wound starts closing. Follow up with your surgeon and you should heal fine.

Dear mariaf2018,this type of wound is not uncommon after tummy tuck. It is usually caused by poor blood flow. I would suggest you to consult your plastic surgeon, follow your surgeon's instructions and keep your wound clean and covered. It can take few weeks or months for wound to fully heal. Daniel Barrett, MD, MHA, MS 
Certified, American Board of Plastic Surgery  
Member, Am. Society of Plastic Surgery

Thank you for sharing your question and photographs.  This should go on to heal with local wound care and without significant impact to your overall appearance once fully healed.  Whether it was due to a stitch, drain site, or tension you should see steady improvement over the next several weeks. Hang in there!