When does pregnancy weight gain begin?

Significant weight gain typically starts in the second trimester, around 13-14 weeks, as the baby begins its rapid growth. The first trimester often sees minimal or no weight gain due to morning sickness or appetite changes.

Honestly, my older sister barely gained anything in her first few months, she was just nauseous all the time. But then in her second trimester, the weight gain properly kicked in. It's not like you instantly start gaining, it's more gradual.

It usually begins to show more in the second trimester, when your appetite returns and the baby grows.

Bitia, in the beginning, sometimes the weight goes down because of the sickness. But slowly, after three, four months, the body starts to gain weight as the child grows. It is a good sign, don't take tension.