My sister has one child, and did not have him until she was in her late 20s, and it was sort of a snap decision to have a baby. She doesn't want any more children.
Her Lot of Children is at 3 degrees Scorpio conjunct DSC (3 degrees), Moon (4 degrees) and Jupiter (5 degrees). Mars is in Virgo in the 6th house, so there is 1 sign between her Lot and the ruler (1 child), and between the two occurs the Sun and Mercury (Mercury conjunct Mars). Leo is on the cusp of the 5th house, with no planets in that house and Sun conjunct Uranus in 6th house Libra.
Her son was born during her solar return where Jupiter in Taurus was 1 degree opposition with Lot of Children. Her child has a Scorpio sun oppose Taurus moon (Taurus is also my sister's ASC sign). Also, his Scorpio Mercury is conjunct her Lot. Seems pretty telling!
I don't plan to have any children, and I'm getting past the years of doing so safely. I might have one, but only one if any, like my sister. My Lot is at 7 degrees Libra making no strong contacts, with Venus in Virgo trine Mars and square Saturn. No signs between the two (0 children) and no planets, there being only 27 degrees between the ruler and the Lot. Virgo is also on the cusp of my empty 5th house, with Mercury combust in Leo in the 3rd house and oppose Moon. I'm too much of a child to have children?
For giggles, I checked what my solar return chart looks like for 2022, because that's when t. Pluto will be exact conjunct my Moon and oppose Sun and Mercury, square natal Pluto, and I've always suspected something "big" is going to happen at that time because Moon is such a powerful planet in my chart... and oh dear, Jupiter is 1 degree opposition to Lot of Children, also falling with Jupiter on the solar return IC. Mercury (5th house ruler) is also returning to it's natal position that year.
So... solar return pluto/transit pluto are on my natal moon, opposing Mercury in both natal and solar return, where Mercury is the ruler of my 5th house and Jupiter is opposing the Lot of Children. Baby making time? A transforming life experience for sure.
It's 8 years away so I guess only time will tell. It seems like it'll be a ride, whatever it is!