6 weeks with Swollen Uterus

Hey guys I'm 6 weeks and 2 days with my little 🌈👶🏼 and my fiancé and I just had our first OBGYN appointment. My OBGYN felt my uterus and said it was alittle swollen and that it was good? What does this mean though? I thought your uterus doesn't start swelling until like 12 weeks? I'm just curious 😋 my first ultra sound is in 2 weeks 😍