I'm a 21 year old male. Four weeks ago, I came down with what seemed to be a cold. I experienced congestion, cough, and laryngitis a day or two after exposure to large amounts of hay and agricultural lime. Taking this into consideration, I'm a bit skeptical as to whether or not it was a cold or just an alergic reaction. The symptoms have drastically decreased. My nose is still half-way stuffy, and I'm still spitting up white phlegm, but it's more of an annoyance now than anything else. Some people I've talked to think that it's post-nasal drip. I was wondering if there was anything over-the-counter I could take to rid me of these symptoms, or if they should eventually go away on their own (keep in mind they haven't completely gone away and it's been a month).