just wondering

last week i had 2 moles removed. 1 waw right under my chin on my neck and the other was on the left side of my neck.as i was washing myhair the next night i felt a lymph node onthe  right side of my neck behind my ear below my hair line. i went to the dr today cause i was a little concerned. he said that it could have reacted to the mole being removed and to not touch it.
i know these lymph nodes are the ones that are swollen due to local infection,but has anyone gone through this/? it is not really nig at all, just that i can feel it i can feel its twin on the left side as well. my allegies have been a little crazy as well so  i thought it was them too. the lump  does not hurt and it is not hard at all.