The photos show a low tummy tuck scar with some contour irregularity around the scar line, but a photo cannot confirm whether you are seeing or feeling sutures under the skin. At 3 years, major swelling from normal healing should usually be settled, so persistent or recurrent swelling deserves an in-person evaluation rather than being dismissed as routine. Possibilities include scar tissue, a palpable deep suture, suture granuloma, residual fat or skin laxity, lymphatic swelling, a small fluid collection, or a muscle repair/hernia issue. A plastic surgeon can examine the area and may order an ultrasound if there is a lump, stitch-like structure, or fluid concern. Seek same-day care if you develop redness, drainage, fever, worsening pain, skin opening, or rapidly increasing swelling.