Hello and thanks for posting.

I'm sorry that you have been feeling unwell with chest infections, abscesses and now a wisdom tooth infection. That can make you feel incredibly low and rubbish. Unfortunately I don't know what can be making you feel so unwell and tired all the time but I would say that having all those illnesses would have an effect.  When we have infections or bacteria in our system, our nodes in our neck and groin can feel sore, swollen and lumpy, as they are part of the immune system. So it may be that's why they are feeling tender.

Any symptoms that you put into google will come back as some form of cancer, as any cancer can have any symptom, but the internet cannot replace being assessed by a Doctor. Give your surgery another call and ask for a telephone appointment, go through with them your anxieties and concerns about lymphoma. You have said you Doctor had done some bloods, so they can't be too concerned about the results as they would have acted on them, but do talk through again all your symptoms.

Health anxieties can be very difficult to manage, if useful I've placed a link here which may help.

Take care Nic,  and I hope you things improve for you.

Sarah.