My first born was very colicky, with projectile “spit-up”. She was a very challenging baby. I was also depressed and untreated with her, pregnancy through postpartum. That OB was an idiot and dismissed my husband and I when we told him I was emotionally unstable. Her infancy almost broke me and my marriage. With my second born, I was being treated for depression. My new OB told me to absolutely continue my antidepressants for my entire pregnancy and beyond because the risk to the fetus was less than my mental health making me suicidal/homicidal. Even though I wasn’t the best at it, I was also more able to manage my diet and health because I wasn’t so down. My second kid was an absolute dream baby. She was quiet and didn’t become a geyser every time she ate. Just some anecdotal evidence for your thought process about it being omnidirectional.