Not necessarily. I do genealogical searches and I am amazed at the number of families during that time who would easily have eight to twelve children, most of which grew to adulthood.
I also do a LOT of genealogy. When women married a second time it was usually because the first husband died in a work-related death or as a soldier.
In contrast, many women died in childbirth. Having younger siblings always created the risk that the earlier children would lose their mother. Many times widowers left with young children married a second time to have someone raise the first batch, and also to create a few more.
Of course, both sexes die of disease. In any case, bIology dictates it is far more common for men to have lots of children, and often well past 50.