Hi there,
It is likely that your enlarged nodes are due to your recent infection, because of the timing. They usually will decrease in size, though, within a few weeks. Infection is by far a more common cause, but if nodes are remaining enlarged, certain cancers should be considered (eg lymphoma). Malignant nodes are more commonly fixed (not mobile) and hard. They are usually painless. Your doctor may be unconcerned because she is able to examine them and they seem fine, which is a positive sign. If they are still not going down in a couple of weeks, ask about whether she thinks a biopsy is warranted (bloodwork may not pick up something like lymphoma).
Good luck. Hope you are feeling better soon.
JMK MD
I got my cold on about the 17th of March. It was pretty nasty for a couple of days and was accompanied by a sore throat on the first day. On March 20th, I noticed a swollen node under my jaw on the right side of my neck. My cold cleared up around the 26th of March. I was fatigued however and was a bit achey (achy). I still have a raised gland in my neck but all other symptoms have abated. I was wondering if it is normal for glands to take a while to recede after illness or if it happens really quickly??