This could be my post to the T. My 2 year old son has a swollen node on his right side back of neck. I carried him to TC Thompson childrens hospital a few days ago. They did blood work, checked everything there is no infection anywhere in his body that they could find. Sent us home with a very strong antibiotic. So far it hasn't went down, so today we went to his normal dr.He did a mono and a couple other test...nothing he looked at me and said he did not have an answer for me, that he did not know why just this one was swollen and him not being sick or has been sick in anyway. So he referred me to a hematologist that will be next week sometime. I am so worried and scared as well. The only advice I can give you is ask for blood work an ultrasound anything it takes to find out why it's swollen bc there is a reason. My son's bloodwork the first time his wbc were elevated and today those were normal but the rbc were elevated. Weird. I'm scared it's cancer but I'm going to make them do whatever it takes as fast as possible to give me some answers in case it is something serious we can catch it early. Not like some stories I've read where the drs. said let's wait to see if it goes down, come back in a month and the kid had stage 4 cancer. My son is also not sick, and when I feel it it doesn't bother him. Go with what you know is right and do not let any dr. dismiss you demand test.Good luck and best wishes for you and your babygirl.