Early pregnancy and already showing

I have been super thin and petite all my life. Had my daughter 13 years ago. Was still very thin. Over the years I gained more weight. Now turning 35 on August 28 and I have been the heaviest. Whooping 160 pounds. This second pregnancy it’s all so different. Im hungry all the time. Food only fills me up for so long. I feel like my stomach is huge but I’m only 4 weeks and 4 days. Nothing fits. Had to buy maternity pants. Is anyone else showing at an early stage of pregnancy?!? I’m going to roll in into labor at this rate I’m going. 🥺