Should i take her to the doctor she is 12 and when she took a shower she found a lump on her tummy it is the size of a grape and tender

In : In general, if she is having pain, give her doctor a call. Without an examination, it's difficult to say what her painful lump is and how to treat it. One of the more common possibilities for her symptoms is a skin infection with abscesses or "boils". These usually start out as tender, red areas which become hard and then eventually develop a "head" of white pus. Once this drains, the area usually heals on its own. Most of these are caused by staphylococcus aureas, a common bacteria found on the skin. Occasionally, however, the can be caused by mrsa, the antibiotic resistent kind of staph bacteria. Next time she develops one of these infections, start out by applying warm compresses to the area to help draw the infection out. Then, you should take her to her doctor so that they can drain it, test for what bacteria is causing it and be able to treat her appropriately - sometimes with antibiotics, sometimes just with drainage. If she ever develops fever, chills, or feels ill with this infection, call her doctor immediately. You can try and prevent these infections by practicing good hygiene and using anti-bacterial soaps. Her doctor may have other suggestions for prevention.