holly.b said:
I'm going to be on my own in a flat at 6am either way
Holly, welcome, and congratulations on getting here after two years of thinking it through. That is a lot of careful work and it shows in how you've written this.
You don't need anyone sitting on the bath to do test day well. What most people find helps, whatever their situation, is deciding the shape of the day in advance. Pick your test date (your clinic's date, not earlier, because testing early mostly buys more uncertainty), pick the time, and decide who you will tell and how. Gemma's two-plan idea is a very good one, and so is Louise's rule of one person who waits to hear from you rather than chasing. I'd add: book something gentle for later that day that works for either result, a walk, a film, lunch with your mum, so the day doesn't end at 6.05am.
For the days in between, it helps to know what's actually happening and why the signs are so unreliable, which is in the two-week wait. And for the harder days, I've written about coping with the emotional side of fertility treatment, including the support that's out there. Your clinic will also have counselling available, which plenty of single patients use before the first cycle, not only when things go wrong.