It is not from your expanding uterus, as your baby is only the size of a seed. It's more likely your intestines are bloated. So when you say "showing", the question is: what do you mean by showing?
Bloating prob. I'm 8 weeks and sometimes I look bigger then other times. But I've heard if this is not your 1st pregnancy you can show early as 8 weeks
Maybe you're bearing twins?
In my first pregnancy I was bearing twins, and normal clothes wouldn't fit as soon as week 6. Unfortunately I miscarried at week 10
Everyone is different. You can start showing earlier than other women but since you're so early it may just be bloat.
Yep, ur likely bloated. I'm 9 wks as well, and when I'm bloated, my tummy is more prominent than when I'm not bloated. You really dont begin to "show" until the middle of 3rd month to 4th month.