Don't worry. It will almost definitely happen. I've seen the very rare cases when people go to the hospital in labor and never knew they were pregnant. This applies to all body types! However, 99% of women most certainly slow off baby bumps! First time mom's often take longer to show. My first pregnancy took me 4-5 months before I even started seeing it.
i was near 7 months before i got a bump!! so it differs for everyone and how u carry baby. Dont worry it will literally appear overnight & once it does grows and grows lol!! x
I was 6-7 months before I started to show when I was pregnant with my son. At 4-5 months I just looked bloated!