 [ Symptoms ] will i catch the stomach bug from toddler when will he be better  my 3yr old threw up twice yesterday morning together food then bile i think napped drank cup milk threw up once more drank pedialite&gatoraid was fine rest of daynight today was fine all day drank milk through out day ate 3 nuggets&whole apple went to bed at 1030 got up few min ago at 130am threw up twice and now has diareah when will he get better will me or my twin 6 month olds catch it i read a lot of adults will not because we build up some immunity please help [ Disease ] maybe lymph nodes enlarge or become tender in response to an infection or inflammation in their immediate drainage neighborhood since your doctor was not able to find a source for this pain or inflammation it would not be inappropriate to have some basic tests first like a cbc   complete blood count many things including dental disorders can cause an enlarged lymph node so consider a visit to your dentist as well