Sorry to hear your ttc journey is dragging on. It can be so hard sometimes & those sort of comments about "being pregnant by now' are really unhelpful.
I'm like you and wish I had the opportunity earlier as we are now ttc #2 and i have to admit my age is on my mind.
I was 34 when we started ttc #1. We had a chemical at 5wks in Jan '10 after 1 proper year of trying. I had gone off the pill though 3 months prior to starting to ttc. So that was 15mths all up. I then saw an FS and we did a month of bt tracking (it confirmed I was O'ing which I knew anyway as I had being doing bbt for that year prior) and also had an us to check all was clear. And DH did SA.
We fell again in the April '10, I was nearly 36, so all up after stopping bc it was 18mths. I had A LOT of stress in those first 3mths of 2010, and we fell when that was all cleared up.
We just had another chemical last week, our first month of ttc this time. I am now 38 and will soon be 39. And I really hope it doesn't take too long to get our bfp again as I want at least a few months in between having baby & turning 40
Good luck. Hang in there