immune system problem?

hello i need some help, for over a year know i have had a constant soar throat with on and off fevers.the fevers are usually 1 to 2 times a month depending on how hard i work.if i exaust myself it seems to come on strong.my pharynx is inflamed with many vains, and lately its getting red swollen sacks on it, also puss on my tonsels extreme bad breath, pallet sensitivity, nasal congestion and inflamed taste buds at the tip of my tongue.I have been to many walk in clinics and also to ER.and its always the same story from doctors, they quickly look at my throat and say that i have strep,well..ive been on 8 diferent pennacilans in a year and i still have this problem. the general feeling is of soreness and tingling in my throat WITH EXTREME NASAL CONGESTION also lately the tingling has spread to my ears i feel that my entire head has been infected
please help any body