Thank you ladies for your lovely helpful replies, and sorry I'm so late to respond.
It's nice to know I'm not the only one, sometimes LTTTC can make you feel so alone. Luckily my hubby is amazing, although it breaks my heart when he gets down about it all! Like Anne01 says, it's a big relationship-tester, but I'm lucky in that if anything it seems to have brought me and hubby even closer together.
Wingnut, that's a lovely story, gives a bit of hope. I never give up hope each month, which I guess is a positive thing.
FC, no I haven't had my thyroid tested. That's given me something to think about, thank you, especially as my mum has an underactive thyroid. Not sure if it's hereditary or not, but worth bearing in mind, thank you.
So it's decision time next week - IUI or IVF, not a decision I thought I'd ever have to make! Just hoping for that natural BFP in the meantime.
Thanks again ladies, and good luck to all x