Is it safe to bowl while I'm pregnant?
Bowling should be fine. While your joints and ligaments do relax during pregnancy, how much they relax varies from woman to woman. In most cases, expectant mothers aren't likely to injure themselves while bowling. I do have one caution, though: Once you hit your third trimester, be extra careful to lift your bowling ball in a way that won't strain your back muscles. That means making sure to bend at your knees and to keep your back straight.
Since your joints and ligaments get looser during pregnancy, it's possible that the motions used in bowling — in combination with the weight of the ball — would put a strain on your back and various ligaments. But it's probably pretty safe.