@carlee There is nothing more precious than a human being. No job you could do, no award you could win, no book you could write, no YouTube channel you could sponsor, is worth more than the value of a human being. You are contributing something beautiful to the world and once you meet that precious little soul you will never regret it. People who make uninformed shallow comments about the carbon footprint have never really thought deeply about how much a single human could bless the entire planet. Even if that little person is never famous, he or she will bring joy to all of your other children and to you. If you raise them to be kind and honest, their love for others will ripple outward in ways that cannot be quantified during this lifetime. There are many pockets of people who will be supportive for you, particularly in communities of faith who believe that God sends souls for a reason. You don't have to belong to their church to feel their support and love. Find a mops group (mothers of preschoolers) , often sponsored by a protestant church. Or ask some Latter-Day Saint or Catholic ladies if you can join their playgroups. In many of these circles five children is not so many, and frankly you may likely also find friends more easily if you move toward the center of the country and away from the two coasts. So many people on the east and west coast think more than two is absurd but that's because they have become lost in materialism and cramped by urban housing and brainwashed to think that corporate profitability is the highest goal.
In the long view of history, you are the normal one and all of the people who cut their families off at two are the abnormal ones. It was only two generations ago that everybody was in a family at least that big or bigger. Those social support networks were hugely valuable then and they still are now. People who have many siblings have a lot of support even after parents have gone. If you feel like you don't have as many resources for each child, remember that you are giving to each of your children another lifelong friend who will be there long after you have gone.
Yes it may curtail your earning potential for a while, but did you really want your life to be about money? Nah, love is better.