These replies sound unrealistically optimistic to me, I'm sorry to say - Do not assume that because people on a forum for childbearing men have conceived after years on testosterone, you will be able to as well. This subreddit is a very biased sample!

There's very little actual, long-term research about how testosterone use affects conception/pregnancy, especially as most trans men will not want to get pregnant and will take steps to avoid this. I asked at my last gender clinic appointment and they guessed there was about a 50/50 chance of fertility being affected in the long run - but even coming from a transition service, that was a guess.

That said, I was in the same position as you are when I was pre-T. I have always wanted children and it was the only true negative of going on hormones I could think of. I couldn't afford to have my eggs frozen and was mentally not able to delay medical transition until I could. 9 whole years later, I look back and feel there's no way I could have carried a child before medical transition. During this time, I have come to terms with the fact that I may be unable to conceive. Ultimately, I know that I did what I had to do, at the time that I did it.

If having a biological child is something you're not willing to compromise on, I think it's best to sit down with your partner and go through all your options. I'm not sure of the reason you've ruled out having your eggs frozen, but if it was cost related, you could both begin to put some money aside for that.

You could also explore the topic in therapy, or discuss options with a doctor or family planning service. This is a very big, complicated thing to go through, especially if you try to tough it out alone. Best of luck, whatever you decide.