Not exactly new, and close to despair

Hi all,

My names Janine, I'm 32 and have been on MFP since the middle of last year.
I've always been quite big but after noticing in photographs that I've put on a lot of weight since my husband and I started living together I decided to do something about it. Due to a fascination with Boots weighing machines I know I was 232lbs when we moved in together, and just over a year later I was 252lbs. My sister-in-law pointed out that it was probably because I’d just moved from London where I walked absolutely everywhere, to Ipswich, where my workplace is a 10 minute walk away and everything else I have to drive to. So I started working out at home (mostly Wii Fit and some exercise DVDs) and used MFP to watch what I ate. This being just a personal crusade I didn't really have 100% conviction in what I was doing so slowly stopped monitoring what I ate (I have 3 meals a day, breakfast and lunch are quite light, and I don't snack, so didn't see that aspect of my lifestyle being much of a problem with my weight loss), but still kept up the exercise.
In November I discovered that I had fertility issues but because my BMI was over 30 the fertility clinic probably wouldn't accept my doctors referral, so I got back to my food monitoring whilst my doctor got on the case. In December I still hadn't had much of a weight shift, however I received a letter from the fertility clinic with an appointment for the beginning of January, so thinking that the battle was half won I stopped monitoring what I ate again, but still kept with the exercise.
In January the fertility clinic told me that I’m probably not ovulating, and that they do have a pill that could help stimulate my ovaries but the drug company that supplies it has specific guidelines and seeing as my BMI was 40 (putting me just on the border of the '0% chance on conceiving naturally' section and the '10% chance of conceiving naturally' section) I'd have to lose a bit of weight before they'd even consider me. So with a new found motivation I set to it again.
3 months down the line, in March, I’d really only lost a couple of pounds at most and even then I kept putting them back on then losing them again, so seeing as my new regime was sort of getting somewhere but not very fast I decided to step up my game and join the gym. Since then I have lost a few more pounds but it’s still going really slowly.
Well that’s my story, I’m now 243lbs, it’s taken me 6 months to lose 9lbs and I’m not sure why. As I said I have 3 meals a day, no snacking, my breakfast is usually in the 400-500 cals region, my lunch usually 200-300 cals, and my evening meal varies but I’m lucky enough to have a 6ft2 husband that has a quite busy work day so I’m able to give him larger meal portions than myself with a clear conscience. During my regular monitoring my net calorie intake was usually between 1500-1800 calories.
It’s really getting me down quite a bit as me and the husband really want children and it’s not going to happen till I lose a bit more weight, even half a stone would do I’m just not sure I can wait another 6 months for that to happen.
Well that’s my vent, feel a little better for getting that off my chest, thanks for listening.