3-Year-Old Daughter's Speech Delay: Is It Normal or Should I Worry?

Hello Doctor, I’m reaching out because I’m feeling increasingly worried about my 3-year-old daughter’s speech development. She’s a bright and happy child, but when it comes to talking, she seems to lag behind other kids her age. Right now, she only says a handful of basic words like ‘mama,’ ‘dada,’ and ‘bye,’ but she doesn’t really form sentences or try to mimic new words we say to her. Sometimes, it feels like she understands us perfectly. She follows simple instructions and responds when we call her name, but she doesn't speak more than the few words above. I’ve tried reading to her, talking to her constantly, and even singing songs to encourage her, but there hasn’t been much progress. It’s hard not to compare her to other children we meet at the park or in our family circle who seem to be chatting away at this age. To make matters worse, every time I search online about ‘speech delays,’ I end up reading about all these developmental disorders, and honestly, it’s starting to keep me up at night. Doctor, I really need your guidance. Is this delay within the range of normal for her age, or is it something we need to address with a speech therapist or specialist? Are there any specific activities or exercises I should be doing at home to help her?