Pregnancy by months

Katharine • Mommy to beautiful baby girl 8/14/18

Anyone else having trouble determining how many months you are/will be? I’ve seen 2 conflicting ‘schedules’ when searching pregnancy in weeks and months.

I’ll be 14 weeks on Thursday so do I say 4 months or 3? Don’t want to always just say how many weeks I am when people ask.

Which would you go by? I think the first one!