I noticed them on my LO just before her 2 month appointment and brought it up, and I got the same response. I haven't even thought about it since then, tbh. My pediatrician did mention that they tend to swell more after a shot, just for future reference. If you're really worried you could always get a second opinion, but I personally am not too concerned about it. LO doesn't seem agitated and the pediatrician isn't concerned so I'm choosing to just roll with it. Totally understand why you're concerned, though! But if no other symptoms are presenting and your pediatrician isn't worried you're probably ok to take a deep breath and relax
DS1 had these for awhile, but I don't remember how long because I stopped thinking about it and just noticed one day that they were gone. I would just monitor for any significant changes in size, redness and tenderness.
Re: Swollen lymph nodes on the back of baby's head
Edited bc extra words