Its really hard to breathe. I have photosensitivity. (Headaches). My nose and throat are constantly stuffed up with phlegm no matter how much I wretch it out. I've been taking Covonia (think its a UK cough medicine). It seems to help but only for a few minutes. And the does is only two teaspoons (10ml) every FOUR HOURS. What else can I do? Every time I breathe through my mouth I feel like wretching. I couldn't sleep last night. Is there anything I can do/take to soothe this chesty cough/blocked nose/headache? I had a hot shower and it seemed to help but I can't stand in the shower all day. Any tips? I'm really ill! Someone else in the house had this and I've caught it off them but mine seems more severe. I can't speak because of all the shit in my throat. Thanks for any help! So basically is there anything better/stronger than Covonia or any secret home remedies?