Is there ever a “perfect time?” Does such a thing even exist?

I’ve been with my partner for twelve years...we are in our early thirties and for many years I’ve found that we’ve both been saying or putting other things first...wait till we have more money, wait till I’ve got my next promotion, maybe after this... and so on. We have been living long distance for the past seven years of our relationships but get to see each other frequently and are very strong. We are finally working and living in the same country together and we are now at a point of thinking now is a good time. It’s a weird feeling...for the past six months of so I’ve been waiting for this moment and now it’s here I’m starting to feel myself panic about it not being perfect...is this normal?

I know we both want children and I want them with him but now it’s coming to it I’m starting to panic. Panic about putting my career on hold, panic about the cost of it all, panic about living abroad without family nearby. I met a lady once who told me she was constantly saying, “The time isn’t right, not yet, maybe next year and eventually she decided enough was enough and that there would never be a “right” time, so she decided to try, with the plan being “when it happens then we will deal with whatever we have to.” I really liked her thinking, I just want to know I’m not alone in thinking this way? Does anybody else feel like this or has felt like this?