Just caught up wit the full thread. Sorry to hear about the losses, recent and past. 
I've suffered in the past from anxiety but I'm pretty well recovered so I hope it doesn't reoccur. I've a lot of sympathy with those who are suffering with it.
At the moment, I'm able to enjoy the excitement of being pregnant. I know it doesn't always work out but worrying about it won't stop that happening, or stop me feeling sad about it. I can be sad enough if the pregnancy ends, and if that happens at least I will have enjoyed the good bits of pregnancy.
I know it isn't easy to snap out of the 'But what if?' because it is emotion rather than logic. So if I start having anxious thoughts about it, I will try to remember they are just thoughts and distract myself with something real and immediate, because when you are really in the moment, its hard to worry about the future (or past).
With DC1 it took us so long to conceive I couldn't quite believe we were really going to get a baby so kept expecting everything to go wrong, or be difficult (right into labour, birth and breastfeeding) but it was ok, all the worrying just sucked the joy out of the pregnancy.
I don't have the problems many have with concealing drinking as I never drink much anyway, so it's just a case of removing my bottle of baileys off of the online xmas shop. I'm also not a fan of caffeine, soft cheese, liver or under cooked meat so pregnancy isn't a big adjustment. I might just have to avoid mr-whippy style icecream! That sounds so smug - sorry!
I was trying to get fit and healthy before, so I'm going to try and keep that up as much as possible, dropping down the intensity of exercise as needed. I need to eat more fruit &veg too, nausea permitting.
First thing I rang the local midwives, and they are passing on my details to the home birth team (I hope they feel I'm eligible, although I'm large I'm as fit as I've ever been, and my thyroid didn't cause a problem last time around). I rang the GPs about my thyroid meds, but the receptionist said to go to the midwives first and they would ask the GP to up the prescription and they'll do bloods at my appointments.
I'm sorry that poster up thread had been told her thyroid would be a problem. Apparently, it can increase the risk of mmc, and I was offered an early scan last time. My levothroxine was increased by a small amount and I had regular blood tests, but it was never a problem and did not need to be increased again. I eventually birthed at the CLU for other reasons but no one said my thyroid would prevent me giving birth at the standalone MLU (though I did see a consultant once or twice at the mat unit during pregnancy - perhaps due to thyroid and high bmi)