When? xx

💗louise💗 UK • Mummy to 1 prince and 2 princesses 💙💗💗 pregnant with our 4th little one our 2nd boy 🥰💙👶🏻 due January 2020
Hey ladies, I'm a little confused as to when the 2nd trimester starts. I have read it starts at 13 weeks on some sites and 14 on others now I'm confused with it lol 🤔🤷🏻‍♀️ xxx