I really hope things work out for you. A friend of mine recently had her first child a couple of years ago and she was in her forties when she conceived, after years and years of trying, so it's definitely possible.
I truly believe that people who haven't been through it, don't get it. I say that because when we started TTC, I didn't get it! It wasn't that I wasn't trying to be supportive of people who were having issues, it was quite literally that I couldn't comprehend it and, therefore, had nothing of any value to say.
Although I will admit that one of the most annoying things in this entire situation is the people saying "just relax, it'll happen, don't get stressed out about it" - it just makes me stress out MORE. You're going through something that IS stressful in its nature and it does make you worry, so to suggest to just "stop worrying", I find really insensitive.
I'd much rather someone say to me "Look, you're going to be stressed out about this and you're going to worry about it, so feel all of your feelings, swear and cry and give up a million times, as long as you get back on the horse and have patience."
I try not to focus on the "what ifs", but rather focus on the present. Of course, that doesn't always work, so on the days that it doesn't, I let myself feel whatever I'm feeling, get it all out of my system and force myself to start fresh the next day. ❤️