Counting months in a pregnancy.

Jennifer

I follow this website called Space Fem and I basically use it to track the timeline of my pregnancy.

According to it, I'm 5.3 months along (22 weeks and 6 days). But most infographics say I'm in the 6th month.

Do you count week 0-4 as the first month of your pregnancy or as month 0? (If that makes sense)