can anyone shed the light on difference between chemical and miscarriage ?

Zoe • 27 years old and engaged to my best friend, my soul mate 💕 1 mmc at 12 weeks and 1 mc at 5 weeks 🌈 my angel babies ✨
Sorry I don't wish to appear sillly but I had a miscarriage when I was 4 weeks last year but have seen a lot about a chemical pregnancy so wondering if I had that and not a mc ? Can any one help explain the differences ? Thank you x