I'm showing at about the same rate I was with my first. I tend to end up gaining love handles with pregnancy so some could have guessed it's just extra weight while some others notice baby. I'm 22 weeks. With my first people didn't notice until about 26.
I started showing around 10 weeks a little bit ( as in only I could tell). I was horribly bloated though my entire first trimester so I looked pregnant. Everyone is different though. I didn't start showing until around 22 weeks last pregnancy. This time at 14 weeks, I had a relative I rarely see, and who didn't know, could tell I was pregnant within the first few minutes of seeing her.
I couldn't button my pants the day I was 1 day late on my menstrual. Come to find out my uterus tilts forward. With my small frame I got big fast. In fact at 4 months people thought my baby was due. When I was due people thought I was having twins.
It is possible but everyone is different. Youll just have to wait and see