Why does sex clear my sinuses?

I have a horrible cold. my fiance and I be together all weekend and the individual time I could actually breathe through my feeler was during sex. It couldn't enjoy been my position because I be lying on my back... and it surre doesnt work that method when I try to sleep. so why does sex clear my sinuses, and does this happen to anyone else?
Answers:

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Nasal congestion is usually associated next to local vascular congestion involving the vessels underneath the nasal mucosa. These blood vessels, similar to adjectives other vessels, transport adrenergic type 1 receptors for endogenous catecholamines (adrenaline, noradrenaline); following stimulation of these receptors the vessels constrict thus decreasing the mass of the nasal mucosa and increasing the diameter of the nasal opening.Sex is associated near increased release of adrenaline and this is why you experienced relief of your congestion...The same point happens during exercise and it is deeply common for ethnic group to find relief of their congestion during exercise.Actually this same workings is exploited by nasal decongestants which mimic the actions of endogenous catecholamines (most of them contain some analog of adrenaline)...So, during sex you are short of "self-medicating"...

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Blood flow during excitement..

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Any form of exercise causes your body to produce antihistamines, this is also why when you are sick, one of the best ways to be aware of better is to go outside and run.