Hi @BabyFeet92 here's mine, it's not representative of everyone, of course.
TTC 12months, went to GP, had day 3 and day 21 bloods (for progesterone and FSH/LH) plus follicle count ultrasound. DH referred for semen analysis. All ok/normal apparently.
Continued TTC 6 months as per GP advice.
Returned, told to wait for referral to women's health dept. Took 9 months. Had a phone consultation but was useless.
In the meantime had a HyCoSy privately to check tubes, all clear.
2.5y TTC, no joy, about to pay private IVF for unexplained infertility and finally got a nice NHS consultant who referred us.
Had a blood test within 2 weeks of referral at clinic, found out I had low AMH and low follicle numbers (not many eggs, also immature when released each month).
Recommended IVF, did 1 round in Nov. Just one embyo from that cycle, currently 9 weeks pregnant ❤️
If I could go back, I'd have paid for the AMH bloods privately at 12months TTC. It was a direct ticket to NHS IVF for me with those numbers, NHS was happy to accept private test results (we monitored DHs sperm quality with private tests). If you can afford testing, keep your results organised and share with NHS consultant's secretary, you can speed up the slow part: the diagnosis of a potential issue.
Best of luck, it's so daunting, but it can be ok once you know what your issue is. Others aren't so lucky, I do appreciate that, so just presenting one timeline!