TTC for 14 months

Am

We’ve been TTC now for 14 months, never had a positive and feeling hopeless 😞 we’ve had some preliminary tests, husbands sperm sample was all normal. My bloods came back 219pmol estrogen (day 3) and 54nmol progesterone (day 21) transvaginal ultrasound was normal. I have a regular cycle although it used to be 28 days it has become slightly shorter (more like 25 days) and much lighter over the last 12 months. I’m 37 now and wondering if it’s purely age related, I did also have the copper IUD for 2 years and wonder if that could have done something. My close friend is the same age and fell pregnant pretty much straight away last year 😞 I’m so happy for her but it’s so hard. Is there anyone else in a similar boat? I need to find out what the next steps would be but just feel so defeated at the moment and just needed a rant!