Mine are about the size of a kidney bean apparently, which does not concern the doctor. I don't touch them myself very much as I find it too scary. I have been told by doctors that if they grow over time (and become significantly bigger), that is worth checking out. Half a centimetre is nothing! Mine come and go, which apparently would not be the case if it was something serious.
I know it's hard but we have to trust that the doctors know what they're doing. I have seen so many doctors, I clearly haven't trusted them - but how many more can I see for them to tell me it's OK and for me to believe it? I've had a wide range of blood tests, and even throat swabs and chest X-rays (incase it was TB). All the tests have been repeated several times now. If the doctor keeps telling us it's not worth investigating further, we have to eventually believe them - they are the experts, not us. For me, leaving it and getting on with life as if everything is normal just feels like taking a huge risk. But I've spent so long putting life on hold and fretting over whether I'm seriously ill, it's a risk I really want to try and take, because what kind of minimal life is this if I spend it in constant anxiety anyway?
The problem with symptom-checking on the internet is that it seems to uncover only the horrific causes. These are very rare. It's actually very common to have small lymph node lumps, but no-one mentions it. Maybe because they simply don't have a good explanation for it. If you've had epstein-barr virus in the past (it turns out I had it, but never knew when...) the enlarged lymph nodes can stay enlarged afterwards. Some alternative practitioners say stress can cause it. None of this can be explained by modern medicine. It's funny how the most common things are the least understood! For example irritable bowel affects 1 in 10 people, but is not well understood by western medicine at all. Fortunately the very common things are generally not very serious.
My parents have reminded me a while back that "common things happen commonly". It sounds obvious, but the more I've thought about it, the more it has hit home. My symptoms - and yours - are far more likely to be down to something common (and non-serious) than something extremely rare. I think maybe people with health anxiety have a distorted sense of risk - it's as if we think it's more likely to be cancer than anything else. It's easy to reassure someone else and believe that it's not serious in their case, but hard to be objective about yourself. We can never be 100% reassured because there is never any real proof that we are healthy, so there is always room for worry. I guess it's about learning to live with the uncertainty. I don't really know how, but I'm getting tired of worrying and the time I've wasted on it.