Im 29 weeks pregnant which is 7 months baby development?

is good and hes a healty baby but i look like im only 4 maby 5 months pregnant and with only two mor months left to go i dont look like im bout to have him does this mean im going to have a little baby or should i just quit worring everybody i tell im 7 months going on eight look at me like im crazy cuz im not shown like im bout to be eight months but my doctor tell me im fine and to keep taken my vitimians and my gain is okay so should i quit worring or is he gonna be little but when he moves around i my stomach moves up and down with him so any advis will help oh this is my first pregnancy