Flat good luck with the move - hope the mortgage numpties pulled their finger out and that you and Mr FlatWhite will be v happy in your new home
Glad the wheels are in motion after your appointment, although ‘unexplained’ is understandably infuriatingly frustrating
Wow, marathons and tough mudders! - that is seriously impressive stuff. Getting healthy sounds like a really positive plan - agree totally that whilst there’s no reason at all your lifestyle would realistically have anything to do with an IVF cycle failing or succeeding, I can totally relate to wanting to do whatever I can to try and control the controllables, so I don’t look back and think ‘if only I’d done / not done X or Y’
PMSL at your ‘eight and a half months’ comment - I’d be soo tempted to do the same. Most clinics still make you come in for a beta even if the result is negative, to make doubly sure it’s a BFN before you stop taking the progesterone. Don’t know what the process is with my Dr as I’ve not yet got to transfer to have that conversation!!
Newleaf keeping everything crossed for your mid cycle scan, hope the journey is worth it (and no one here would think you were nuts….or at least no more nuts than the rest of us!! 
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science you’re going through so so much it’s entirely understandable that you’re feeling low. You have to do whatever you feel is right for you re: the antidepressants, but just remember that your future bubba needs you to be in a good mental and physical state, and that if the Dr is happy for you to be on the medication (and millions of women take SSRIs throughout pregnancy all over the world), they must think the potential benefits outweigh any risks. Echoing everything Flat has said below
Hope the appointment tomorrow goes well and that things are healing physically - and that in time the emotional scars will start to heal 
vap Think you and your partner have earned a blow out Xmas, the health kick can deffo wait till Jan, I reckon. And I’m so there with you on the Clearblue sticks - if I wasn’t on the pill I would totally be there POAS with you. I’ve peed on lots of OPKs, just not done any preg tests as there hasn’t been a month since we started trying (admittedly not that long ago, so it’s not that many months) that I could have conceived - my lining has been consistently too thin to support a pregnancy, so never at any point thought I could have had any chance of being in the game 
Flat I know the clinics say not to bother with OPKs etc, my consultant was fine with it - because if I didn’t, I would have no idea IF I was ovulating and if so when my period should be due. It’s a lot less stressful to just have some leisurely regular shags, but unless you have clockwork cycles, it’s a lot easier said than done tbh.
AFM, it’s quite weird being on the pill and having an enforced month off from TTC (as part of fertility treatment to try and get me up the duff!!). Quite good timing though given the raging flare up of cystitis I have at the moment - second course of antibiotics in a month, fourth in 9 months. Urgh
Baby blitzkrieg at the moment, with friends and family on all sides popping them out. My friend and his husband even announced they were having a baby on FB - I’m not entirely sure quite what the arrangement is (surrogate or co-parenting, or other…) but I messaged him to say congrats, and that I understood only too well that the process wasn’t always straightforward. He was so lovely, and said they’d been tinkering with it for 18 months, and hoped it worked out for us, as he really hoped to have friends nearby with kids the same age. Brought a tear to my eye as I just can’t let myself imagine the thought that we could actually become parents one day - just makes my heart ache