will I get a bump

Hey everyone 
I have been with my boyfriend for 3 years and we are trying for a baby. I used to weigh 20 stone but lost some weight over the last few years and I'm not 13/14 stone and am a uk size 14/16. I still have a belly and always worry when I get pregnant I won't have a bump. What are your experiences with being plus size and having a bump?