not good at months

Keiara • Tue, Jul 24 • Mommy of 3 Khloee 😍 Amaja 😘and Baby Number 3 12/18🤰

I'm not really that good at months I'm just use to telling people my weeks and I'm tired of people asking how many months and I'm looking like I don't know myself😂😂 so my question to the mom's that knows. How months is 18 weeks and 5 days?