thta is unfortunate to listen that you lost so much weight but have you gone to your doctor to talk about it. if not than you should and where are your glands swollen its unclear from what you say but can you please explain it a bit more in detail and yes dont stress yourself out bcoz of it okay cuz anxiety will just get better of you.
saty calm and healthy
I would get to your Doctor as soon as you can. Painless lumps of any kind are not a good sign. Take care