Thanks ladies!
Unfortunately I am allergic to penicillin. I am doing a saline rinse for my nose twice a day or so. It does seem to make some improvement. And I hear you on the dizziness thing - standing up for more than five minutes makes me dizzy and nauseated.
On the plus side, I've had a decent sleep for two nights in a row now, and I feel alright this morning. Tired, yes, but not as bad as before. DH has shipped the kids off to his mum's, and cleaned the house for me, and so I will have a totally quiet day. Hopefully with one more day in bed, and lots of herbal tea (don't worry - it's a safe one) I'll be on the way up.
If you have any advice to help speed this up though, I would really appreciate it. Since I got morning sickness, the flu, and this thing, it seems like I haven't been healthy since January.