Maths, try to use local honey, so it is derived from the pollens in your area. It doesn't work for everybody, but it's definitely worth a try! For itchy eyes, cold teabags on (closed, obviously!) eyes is great. Can leave you looking like you've been decked in the face if you leave it for more than a couple of minutes though!
Weight-wise, I'm just not thinking about it. I'm eating reasonably healthily, though am also scoffing delicately nibbling my way through a fair chunk of crappy carbs too. Are you planning to bf, lady? That can help promote faster baby weight loss, apparently. Also, having not done this before I can only guess, but I would think Random's case is how it will go for most of us - your body is stockpiling energy and resources to last the first few weeks after pregnancy as well as during, so a fair bit of it should shift with minimal effort after that. I really wouldn't worry about it - you sound like you're being sensible about what you eat and your body is just doing what it needs for your baby 
No dizziness here, but I keep having heart palpitations. They've only started this week really, though I had them occasionally pre-Bean. Apparently this isn't a cause for concern unless it is accompanied by other symptoms - dizziness, sudden nausea, headache - but just thought I'd share with everyone. It might not be something to worry about on its own, but it's bloody unpleasant! 
Posy, hopefully they can sort you out quickly, it sounds horrible 
Hope everyone has a good day today and is ready for the 'heat wave' over the next few days! (We're set to reach a balmy 19 degrees down here in the Forest. Positively tropical! Definitely going to be cracking out the virgin cocktail recipes...)