Hi snowday. I feel like we have been on a thread before together. Quite likely in this infertility game!
But my story is exactly the same. Had my son at 38 after 5 years trying. I had 4 frosties, and when he was approaching 2 we did 2 cycles, both failed. Then a third when they worked out there was a lining issue. 3rd embie failed to defrost properly, so suddenly it was my last go. With the worst quality embryo, and I was pretty angry as I feel the lining issue was obvious (I had mentioned it) but went ahead with the first 2 cycles, and 'wasted' those best quality ones. 3rd cycle resulted in a BFP, then chemical... which made me even more upset, as that meant the earlier ones may well have taken. Anyway, hindsight...
At that stage I was 40, and we'd agreed we would only try the frosties, but after a few months I realised I just wasn't ready to give up. DH took some convincing, but he relented in the end. At 41 I had one last fresh go. Got one good blast, which is pretty normal for me, but it came to nothing. Just more money poured away. DH thought I'd push for another, but the fact that it wasn't 'even' a chemical made me feel it just wasn't going to happen, and I don't have the heart or energy for donor eggs.
Anyway, I'm now 6 months later and I'm coming to terms with it. I'm glad I'm out of the IVF fog. I gave it all I could, and it didn't work - the last fresh cycle was needed to show me it was the end.
It breaks my heart that my son won't have a sibling, but now at least I can give him all my focus, not be yearning for another. I can see more clearly now how siblings aren't that great for everyone, and one child is a lovely experience. I am more present in each moment, good or bad, as I know this is the only time I get them, so I don't get annoyed easily at anything.
I'd still give my right arm for another, but we know that's not enough...
So, just giving you another view. It can be ok, and in truth it's so much better than not having one at all. I'm not saying be grateful, although I know you are, just console yourself with soft toddler cuddles and giggles. It is better, so much better, than what it could have been.