Swollen gland and night sweats

Hi all ,

My son has had numerous infections, looks to me as if he has lost weight he also has night sweats that actually lead to him having to get up and change he's constantly sweating. The gland in his neck has been swollen since October but he has had two bouts of tonsillitis and antibiotics, he's also quite tired all the time now he's complaining of a sore stomach and headaches feel like we kind of get brushed of with the doctors. They see his throat is playing up and that's what is causing all this . Am I being a paranoid mother ??