Confused on "week" classification?

Jen • Welcomed 👶🏻 2/26/2018 🙌🏼☺️ Unexplained infertility 👩🏻‍🔬 Me: 32 DH: 33 👨🏻‍🔬 3 failed IUIs, 1 PGS FET 6/2/17 - BFP ➡️ Baby Boy!!! 🙌🏼

Today I'm 16w1d. That means "17 weeks"? At least... that what Glow is telling me. Is it true?