plz helppp

i just found out few days ago im pregnant so im only the most 5 weeks.But im already fat or i feel fat.My mom saw me today (i hate her honesty) she doesnt know im pregnant she said u gained a little weight ur cheeks look rounder 😞 is it just bloat? what can i do not to gain alot of weight.This weight issue is bugging me so much i cant evn enjoy fact im pregnant.Im 5"5 150 pounds.Im not the skinniest girl ever but im not fat either but when i gain weight shows on me very easy. Especially my face it gets round