so i have the bump, babycenter, glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> and pregnancy+. on week 19 they all say baby is the size of a mango , but for week 20 the bump and glow say a banana while pregnancy+ says cantaloupe! glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> & the bump say week 24 is a cantaloupe while babycenter says the size is a cantaloupe at 34 weeks. what is the most accurate in your opinion mamas ?