Im 24 i still have one of my baby teeth i never lost.is this bad ?

Retained baby teeth: In an adult are often associated w missing permanent teeth. The adult tooth simply wasnt there to help the baby tooth exfoliate. A thorough dental exam will confirm this. The baby tooth has likely helped "hold a space" where the permanent tooth should be. Get w your dentist to evaluate your situation and discuss/plan what might need to be done in the future if, or when, the baby tooth is lost.

Baby teeth in adults: Some adults retain their baby teeth because a permanent tooth is not underneath. If the top of the baby tooth stays level with the adult teeth around it you are in good shape. If you take care of the baby tooth, it will give you many more years of service. Ask your dentist if you have more questions.

Congenitally missing: Not knowing your dental history and not being able to evaluate you personally, my educated guess would be that the adult tooth never developed, which in that case you should know that your baby tooth will probably last until u are 40ish or the adult tooth is blocked from growing in. In either scenario you should see a dentist, have the proper diagnosis and learn your treatment options!