Are these Allergies? ANd how can i sooth allergies naturally?

Since spring started really, two or three weeks now, ive had congestion but its not runny ors niffly its just clogged, or like my sinus's are swollen. Ive been tired off and on, really tired and listeless where its just a pain to get ot of bed, even my digestive systems been sluggish (when im tired that is probably because i dont get exercise when i go through these spells) I'll also get an irritated or sore throat now and then. These are on and off, a few days i'll feel like this and thn a couple days i'll be fine or it'll get worse some days more then others, especially on rainy dreary days. Are these alleriges kicking in early? Can allergies cause fatigue and headaches? Are there any herbs or teas that'll sooth allergies?