Lilac, with my first bubs, we wasted our time doing IUIs when we should really have gone straight to IVF. We have "unexplained infertility", so no real reason why we couldn't fall pregnant, but due to being in my late 30's with first bubs, doc suggested to go straight into assisted fertility. Our first IVF cycle was a bit of a test run and after collecting 15 eggs, sadly only one fertilised.... we were in shock, but, I still don't really know why to this day they didn't just do ICSI first up, but they didn't and that's why only one embryo fertilised. Second IVF was cancelled as I think I only had 6 follicles and FS felt it would be better to leave it after having 15 eggs collected first cycle, so we did and then on the 3rd cycle fell pregnant, so minus the IUI, not too bad for our first time round with IVF..... though it didn't feel like it at the time.
This second round has just been alot of bad luck as I did fall pregnant the very first time we tried for our second bubs. A natural FET with our last frozen embryo and I got a BFP and numbers were rising well, but sadly when I went in for my 6 week scan, FS couldn't find the heartbeat where it should have been and saw something flickering off to the right and my poor little embie had got stuck in my right fallopian tube so had to be removed before it grew and burst my tube. Since then I've had one chem pregnancy and 2 BFNs, so my poor old body is probably a bit weary. Anyway, I still hold out hope, despite being a little older that we will eventually get there. I just have to be patient. It's a little bit like most things when you get older, they get a little bit slower and things take just that little bit longer to do. So I'm still hanging in there and will just keep trying until I lose hope. I know many women younger than me that have had to try so many more times than me and they do eventually get there, you've just got to find a way to stay sane. Having said that, I'm sure you won't be taking the long road to getting your first IVF bubs. I have a good feeling about your FET!