Can diastasis recti be prevented during pregnancy - even with six-pack abs and 122 lb, 5'4'? and is it possible to feel sore abs during 14 week? slight belly bulge, it's sore as if i did 100 sit ups?

Diastasis recti is normal and allows the abdomen to accommodate the growing pregnancy. It may not occur if your abdominal muscles are sufficiently elastic, but the six-pack abs may be less flexible and may make you more susceptible. Your current soreness probably reflects the muscles stretching. If a diastasis does develop further abdominal exercises will make it worse.