hronic nasal/ throat problems/ swollen lymph nodes

I had my tonsils out some 34 years ago and remember being told at the time that I had a "chronic infection". Nothing was done about it. I will often get a sore throat and end up with flu-like symptons and never seem to be able to shake it without antibiotics. I look after myself well. I have always had swollen lymph nodes in the front of my neck under my chin. I regularly take antihistamine. My nose begins to run every time I eat. I would be very grateful if anyone could offer some advice.Man thanks.