My toddler threw up once yesterday morning and then was absolutely fine all day. No temperature or complaints of pain etc. The same thing happened this morning and again other then going back to sleep no temperature or anything. Usually with a sick bug he can't hold anything down but he seems to eat pretty well and drink well so does this sound like a sick bug to you? He has recently had an infection in his genitals and at the time he didn't have a UTI but could this maybe be a UTI? I have heard they can cause sickness. I will obviously check with a gp but any experience of the same would be of interest