Ayyy mama, I totally understand why you're stressed, pero please see your OB right away para ma-check properly, okay? Five months should have certain measurements, at dapat alam mo agad kung ano ang normal para sa iyo specifically.
A few of my mum friends actually had smaller bumps compared sa iba, some babies just sit differently, or yung uterus position varies, pero yan talaga dapat i-confirm ng doctor, hindi guess-work lang. Don't let other people's comments get to you; every pregnancy is different! Once you get checked at may ultrasound, you'll feel so much more at ease. Kaya mo yan, mama!