Your body and your right definitely; however, if there is a relationship and his "biology" is required. IF a relationship is desired in the long term, then he has to consent also.
This is why I would love for effective and safe non-invasive birth control be available for men.
You are correct, social medium is a treasure trove of trauma and judgement. Two things that hamper the making and maintaining of a baby ...
Stay far far away.
But as I have shared before, I have a horse farm and we do AI work. Age of the sperm and egg becomes critical. Humans are mammals, the rules stay the same.
In humans earlier is safer, easier and better on average for the mother and the child.
Good luck, I do wish you well, and I have known women to go it alone and it is exhausting but they love it. Or well they love it until the child becomes a teenager :)