Crikey - I should check in more often. Hanging on for an Easter Break here.
Beegee - I too have days of wondering whether I really want to go back and do the baby thing again. My only DD is 2.8 and it's adorable to have proper little conversations with her (flipside being she's an opinionated little madam, sigh). But like you, we come back to thinking we definitely (desperately) want another little human too. No experience of teenagers, but hopefully your 14yo would, given the reassurance I’m sure you'd provide, take a new addition to your family in their stride?
Pies - interesting you have Hashimoto's. Feel sheepish now for grumbling - your 200mcg Thyroxine makes my own 75mcg look like homeopathy! Do you get blood tests regularly and are they stable?
How exciting to be moving home! Hope the new flat heralds all good things for you; lovely 18month old sleeping in their own bed and a new pregnancy, obviously. 
Joey - re your chat with the IVF nurse, was that your review appointment? Did she not suggest how you might modify a protocol for an own egg cycle, if you decided to try again? I do wonder if donor eggs are sometimes pushed a little too readily, just because everyone likes an easy day in the office (me included) as obviously success rates, whilst not guaranteed as you say, are massively higher. But that’s not like saying you couldn't conceive with your own eggs, if that's what you really want, is it?
Joey / Ababs / Pies / KK - on donor eggs, I feel pretty similar to what some of you guys have said, i.e. I’d probably do it if I didn’t already have a child that’s genetically mine and DP’s. As it is, I can’t help niggling worries that I’d subconsciously favour my DD over a donor child, however dreadful that sounds. (I already worry about what I’d do if I finally managed to have a baby and it was another girl, I mean, what if she didn’t ‘measure up’ to my idolised PFB!
) While these are my gut feelings, rationally I suspect they’re quite unnecessary concerns to have, especially when I compare e.g. three families I know with a mix of both genetic and adopted children, and two more families with donor conceived children (one donor eggs, one donor sperm, actually). All these parents have unquestioning, equal, boundless love for each of their kids – so maybe I'm just over-thinking it.
MattsMamma - I know v little about Prednisolone, but did hear that some people think it interferes with ovulation if taken beforehand? I guess any issues are over-ridden with super-ovulation drugs, but not if TTC totally naturally. So it sounds like a plan to take it from BFP, especially as like you say, that’s an official school of thought anyway.
I started Thyroxine due to elevated TSH and since then, my dosage has been adjusted every now and then based on TSH/Free T4, as you’d expect. I did have my antibodies tested after a while – I do have Thyroid Peroxidase (TPO) antibodies, but not Thyroid Receptor (TrAb) antibodies. But my endocrinologist (who seems brilliant to me, IMHO) has never suggested I need steroids for the antibodies, just the Levothyroxine to correct hormone levels – so I’m a bit confused. Was Dr Shehata maybe suggesting the Pred for the NK cells – rather than the TPOs?
I’ll definitely ask endo about Selenium. Just looked at my Pregnacare and there’s 55 mcg Selenium in that and I've been taking it for bloody years! But maybe I should look at increasing to 200 mcg like you say. Did anyone recommend that to you BTW, or is it from research?
KKMuppet - Hmm, isn’t it scary how IVF costs creep up! But in the crazy IVF world, I think £13.5K for 3 cycles is still, relatively speaking, not too bad value. Not like we have that sort of spare cash lying around (consecutive wrecks of houses have demolished any idea of savings) but I’m sufficiently irresponsible desperate to think IVF is a noble enough reason for borrowing (on 0% interest credit card, whatever).
On your protocol: 150 iui Gonal F + Cetrotide seems not too dissimilar from the 225 iui Gonal F + Cetrotide that was proposed for me. Re the Cetrotide - as I understand it - it’s a GnRH-antagonist that prevents a natural LH surge. It’s started a few days after the FSH (Gonal F) injections (which stimulate development of follicles) and is continued until the HCG trigger shot (which primes follicles for egg collection).
Ababs - I hear you. Tell me the terrible twos will end soon, please!
Sorry to waffle on for so long. Need to try to master the succinct post go to bed / get a life