Yep! I knew many women in their mid-50’s with biological children under 10 (and sometimes children in their 20’s and 30’s at the same time).
Most women my age didn’t marry until 30-ish, and they still had children easily through their 30’s, early 40’s, and sometimes late 40’s without planning to.
Those who don’t intentionally wreck their reproductive systems often find that they have babies.