Symptoms?

Hello,

For about a month now I've had night sweats, itchy skin with no rash, round patches (like chicken pox) rash, fatigue, breathing/chest problems, a swollen lymph node and also now unexplained bruising. 

My bloods came back all clear from the doctors so they do not want to investigate further. 

I am not convinced that nothing is wrong, should I insist on more testing? A lot of these symptoms are linked with lymphoma so I'm a bit worried. Drs thought I was being dramatic 

Thank you