Oh dear!
Fern's advice to you is really, really good. And so is Natt's about the plan.
The thing I find is, there's a massive difference between wanting to lose weight...and actually doing it. It's happened to 99.9% of people here I'd say. We want to lose, for whatever reason, be it just generally or for a specific thing like your fab wedding...but our weight issue is making us unhappy and we desperately want to lose weight. We try a variety of methods but we lose a bit, gain a bit, lose a bit...yoyo.
Then something clicks. Dunno what it is, but there's that point where it just works. It all comes together. You stick to the plan, you've found out what works for you, you start seeing results, you get motivated by this, you wonder why you've not been doing it all along...and before you know it, that long journey with massive mountains along the route, has become a stroll in the park with a few small hills
I really do believe you have to get your head in The Zone before you can lose weight and keep it off. So do some things to help you get in that zone. Print out pictures of your dream wedding dress and stick them everywhere. Find the worst fat photo of yourself and keep it on you at all times, to look at if you're feeling like giving up. Write yourself little motivational sticky notes. Think up some exciting meals and some activities that will get you burning calories but having fun. Come on hear and moan/plead for ideas/research recipes etc. We will support you.
You've got 4 weeks of your countdown left. Let's aim high. Let's go for half a stone off for you in that 4 weeks. That will make SO much difference! It doesn't even matter if you don't hit that actual 7lbs, because you will be so much closer than if you hadn't tried
Come on chuckie, we are with you.