Congrats Mike, to you and your wife!
As for your question, John...
John Boswell wrote:
Did being pregnant help you with working more from your center in exercising a technique?
Although I myself have not yet had the experience of being pregnant, I seem to recall once reading an article that mentioned how a woman's centre of gravity shifts considerably during fetal growth and makes one's posture weaker, so techniques that rely heavily on using one's hara become stressful on the lower back.
(Hoping some other women will speak to this too...)