Over the last few months, I can't stop sneezing, and my nose won't stop running. my eyes have also been much more itchy and watery than usual (I have dry eyes, and the drops I have for that don't help), and I have also got a cough on and off. I feel slightly light headed and tired sometimes as well. Antihistamines haven't helped much the few times I've taken them (usually just after I've had a bout of sneezing, they help keep it off for a while but never stop it for longer than an hour), and I've kept a list of what seems to set me off, most of the time it's either dust or plants. Does this sound like an allergy? Or some sort of cold/bug that's just long lasting and won't go away?