Help worrying about lymphoma

Hi all, I'm pre diagnosis and don't want to be a nuisance as I know a lot on here have actually been diagnosed and have a lot to deal with.  I hope u don't mind me posting. 
 

so basically my symptoms are: massive bruising but not knowing what caused them, totally off my food and feel sick after a few mouthfuls and sometime sick afterwards. Lost a stone probably in about a few months. A really tight neck like I feel I'm being strangled but no issues in eating or drinking. And now I have an enlarged lymph node on rifght side just under the chin. I went to doc today and he said he thinks it's fine but it's quite big but also said as I'm so thin he can feel it more. He totatally reassured me that all ok but did do bloods and referred me to a two week appointment in ent. So now my anxiety has gone into overdrive and I'm just worried coz I have a five year old daughter.