Lumps on baby’s head


I recently found a small lump on the back of my 7 week olds neck. Near the base of her skull. Thebdoctornsaidnitnwasnprobablyna lymph node. Now there are 2 on each side of the back of her neck. I have a call into my doctor because I’m freaking out a little bit. Could all 4 be lymph nodes? She isn’t sick but has been a little fussy the past 24 hours. I’m a ftm so I’m a bit clueless