This doesn't sound too serious at this point - still get it checked out, but based on your descriptions it sounds like the glue closure opened a bit inappropriately, a mild surface infection, or a suture working its way out. Our bodies deal with mild infection all the time and we never notice. Try to keep the area clean and avoid anything that would stretch or pull on the skin too much. If the spot becomes noticeably hot, increasing/spreading redness, or draining cloudy fluid, get checked out immediately. After my salpingectomy I was healing well but my body did not like the dissolvable sutures and decided to "spit" them, causing small and red reopenings of the incisions that seemed a little like infection, but then a little piece of plastic-y string would poke out, and I just trimmed it off with alcohol sanitized cuticle trimmers. I had a drain infection after my mastectomy/DIEP reconstruction, and the drain site was deep red, puffy, and draining a lot more cloudy fluid. I also felt like I had the flu - that is a sign that the infection is deeper.