Aw, totally normal yan mama! A few of us moms noticed bloating na napakalakas even very early sa pregnancy, it's usually the hormones and gas, hindi pa talaga yung baby bump, kaya parang bloated ka lang kahit 4 weeks pa lang. I'd still suggest mentioning it sa OB mo sa next check-up para peace of mind, pero most likely ito ay hormonal changes lang and the extra progesterone making you feel bigger than you actually are at this point.