My boyfriend gave up 25 years worth of smoking a month ago and developed a chest infection where he was coughing up blood and tar and all the rest (I know this is common with giving up smoking). I then caught it (no coughing up blood, but coughing up lots of funny coloured phlegm) and I've had it for 3 weeks. His has remained as well, but got better to the point that now his cough is purely symptomatic of giving up smoking.
When my symptoms were really bad I was sleeping all day and constantly coughing up phlegm. I irritated my stomach quite a lot with the phlegm and coughing and I had a burning sore throat. The cough is no longer as bad, and the edge has gone off the sore throat, but now I'm incredibly weak and have started to get other symptoms.
I feel a lot of pressure on my forehead and behind my eyes. I would call it a headache, but it's more pressurizing than painful. This is connected to a strong feeling of nausea which occurs whenever this happens. My vision has gone slightly blurry (only very slightly) and it's hard to look around with getting sharp head pain. My eyes are very watery. I feel very weak. I tried to walk up the road today but felt like I was going to fall over. The nausea improves a little if I eat.
What's going on? Is this just post-infection something?