My 4 1/2 year old daughter has been continuously getting sick the past 3 months. This is very unlike her. There hasn t really been any big changes to her lifestyle. I don t know what s going on. And it s many things; just in the past few months, she s had the stomach flu, an ear infection, regular flu, and multiple colds. Does she have an immune deficiency? We took her to the doctor s twice over the past few months, and they seem to just think it s a child getting sick a lot, but they didn t do any tests or anything. Should I take her back, and insist that they run some tests?