Yes, in a similar situation too, I'm almost 37 now. I am lucky enough to have three DC already, and as greedy as it sounds, we always wanted four. I never had any trouble conceiving (first or second month) - it was holding onto them that was the problem as I have a 50/50 success rate and high risk pregnancies even if I do get out the first trimester.
This time out we're been trying for almost a year - charting, supplements, the lot since the start. Whilst a year isn't an unreasonable time for somebody not charting or who doesn't conceive at the drop of a hat, it's extremely unusual for me. I've just started seeing a gynae who is as perplexed as I am given my previous experience with conception. An ultrasound came back clear, CD3/21 bloodwork all clear plus charting shows a clear ovulation, SA all clear. I'm pushing for a laparoscopy in a few cycles.
Since I conceived DC3 I have had an ELCS and a similar surgery (transabdominal suture) during my pregnancy with him, so two risk factors there already. I am sure something has messed up in there and I suspect either endo and/or adhesions, or possibly scarring from infection. For what it's worth, I had an EMCS with DC2 plus two surgeries on my cervix during that pregnancy, and conceived DC3 first time 20 months later.
If it turns out we need IVF we're going to reluctantly close the door on it but we're going to go as far as we can without getting involved in the major expenditure. I am starting to feel close to giving up as it is, as it is doing no good for our marriage, but it is the thought of feeling regrets for the rest of my life that keep me going until it really does look too complicated/expensive to carry on.
I know women who are long term TTC with no children hate me (or rather, people in my situation especially as I already have 3 DC) - I see it all over forums, heck there was a post just this week on another forum I am on entitled "Feeling Spiteful"; you can guess the contents. It hurts that they don't think I am grateful for my DC, and that they think I have no right to feel upset with every BFN. I would never dare ask for support for that reason, which makes it an even more lonely time when AF arrives each month. Yes, it probably hurts more having never had a baby, but that does not mean those with children who want more do not hurt at all, of course we bloody do. Just in a different way.
The irony being people with secondary infertility are probably far more empathic for those with primary infertility than the vast majority of the population who seem to conceive and carry healthy babies without even thinking about it.