@heresince2020, you’re not a moderator so don’t get to decide what areas of this board that people are allowed post on.
Anyway.
OP, I was in the same boat as you. When we met, we established very early on that neither of us wanted children. We got married, fended off the “so, any news?” questions and were happy.
Then I got broody overnight. Like an actual lightning bolt. We’d been married 5 years and I was 29. It was like I woke up one morning and all I could think about my my desire to be pregnant. I’d see bumps and get an ache. A friend would announce she was pregnant and I’d have a secret cry out of jealousy. It was awful.
Eventually, I asked my husband if we could try for a baby. He was against the idea because we’d both said we didn’t want that from the start but I wore him down over the course of about 6 months and we started TTC.
It was awful. To be fair to him, once he was onboard, he was committed. He didn’t want a baby, but he wanted to make me happy.
TTCing nearly broke us. I went from a fairly laid-back person to a temp-taking, legs-in-the-air monster. It was awful. I’m not proud 
Anyway, after a year, it because apparent that we were having problems so I went to a doctor and eventually discovered there were some issues with me. I was heart broken. DH was devastated for me. Of course, I was straight but treatment mode.
I think that’s when I realised the damage o was doing to our relationship. DH has always been 100% clear that he didn’t want children and I was the one who changed the goal posts and wanted up upturn our lives and finances. Luckily, DH is wonderful and was willing to go through all of that to see me happy but, ultimately, he was doing it for me and not because he wanted a child. That took.
While to process. I wanted him to WANT to be a dad but he didn’t. Me changing my mind didn’t mean his magically changed and I could see I was damaging my marriage by putting him in a position where he just couldn’t win- he’s either end up with a child he didn’t 100% want, or a miserable childless wife.
So I took 6 months out from evening thinking about conceiving, and told DH. He was happy to keep going, but respected my decision.
I didn’t want to return to TTCing after the 6 months. It just didn’t make sense to keep going when I knew it was never a joint decision and, if we had a child, I’d spend my life worrying that DH wasn’t happy and felt I’d forced him- which ultimately would be what I’d done.
I’m 38 now and no babies. I actually look back on that time and think I was having some kind of hormone-Induced breakdown. There were other things going on at the time in my life that I couldn’t control so I think I was subconsciously trying to control something.
When I think about the fact that we could have a 7 year old now, I’m really glad we don’t 
To be fair, I think DH would have loved any child we did have. He’s a great man and would take on that role very well, but, ultimately, it wasn’t what he wanted and I hate that I wanted to take that autonomy away from him.