could i still have a small baby bump at 38 weeks if im chubby ??

so im 5'1 in a half and about 5 weeks pregnant and i dont really want a big bump lol is there still a chance i could have a small baby bump at full term ?? anything i can eat to keep my weight down so my belly dont get so big ?? i live with my dad and i really dont want him finding out till i move out .