Stomach awareness

So I just found out I’m pregnant. I’m only about 4 weeks along, but I already feel like I have a bit of a belly? Could be bloat... but anyways I feel uneasy about picking up my son who is 30lbs. It just doesn’t feel comfortable already. It’s a hard feeling to explain but having him rest on my stomach or having him in the carrier just makes my stomach feel off. Should I be more careful? Or worried? Is this normal?