Worried I have lymphoma

Hi everyone,

I'm 23 years old and I'm really worried about lymphoma. I noticed I have lots of tiny red dots on my skin like little pin ***, they're flat against the skin. I contacted my GP who said they're not worried about them but there must be hundreds of them and it's like they're getting worse.

 

I also noticed a few days ago a lump under my jaw at the back left. It hurts to touch but it's hard and pretty mobile. GP said to just call back in a week or two if it's not gone down but I'm petrified. 
 

I recently had full blood tests done that were normal and GP said "lymphoma usually shows up somewhere even as a slight abnormality and you haven't really had symptoms" so they're not concerned but I am. I've not had night sweats or weight loss but I do get itchy a lot, especially my armpits they have been itchy for months and there's no rash. Also my scalp is itchy especially when hot but I have really dry skin on there which is what they're putting that down to. I found a red patch under my breast in the crease which I've had for ages that comes and goes, I thought it was just a rash from sweat or rubbing but now I'm not sure.


I've not had fatigue but I have been having trouble sleeping, I don't usually get more than 6-7 hours and I wake up multiple times. Lately I've been feeling a bit more breathless than usual as in maybe breathing more breaths per minute but I'm not breathless to the point where exercising or walking makes me gasp for breath. I also get lower back aches on and off.

 

I'm convinced it's lymphoma. Is there anyone who has/had lymphoma who also had these symptoms? I'm so scared.