Cannot feel baby moving

Hi moms, I’m a 2nd time mom and with my first, I started feeling baby movement at 12 weeks. I’m currently pregnant with my 2nd (at 16 weeks now) and this time round I felt it as early as 9 weeks. I thought it was just my imagination, but when I went for scan at 12 weeks, then I realised that what I felt were real cos baby was super duper active doing somersaults and sliding and punching and kicking like nobody’s business 😂 But since yest I couldn’t feel any movement. Baby is usually very active and punches/kicks hard so I’m starting to feel worried if there’s anything wrong inside 😢 Shld I try to wait it out today and tmr to feel for baby, or shld I just immediately go A&E?