Ay, that feeling ng may stuck food sa tyan is really uncomfortable, mama! At 3 months, your tummy is already stretching and your digestion can get slower kaya mas prone talaga sa bloating at heaviness, a few of my preggy friends experienced the same thing. Best to check with your OB though, especially kung persistent it is or may other symptoms, para ma-rule out kung normal lang siya o may kailangan i-adjust sa diet mo.