Different days?

BoyMom👣 • • Ryder 06.28.18 | Rylan 01.07.20 •

I am 18 weeks and 4 days, glow says that I am 18 weeks and 6 days. It’s driving me absolutely nuts. Is this fixable? My due date (01/05/2020) is correct on my profile.

- I wasn’t sure exactly where to post, sorry if it’s in the wrong location.