19 month old not talking 😫

Someone please give me guidance or reassurance!

My 19 month old is still not talking. She will say hi, “pa” for Vampirina, and occasionally she will say no while shaking her head no. Sometimes it sounds like she is saying other words, but most of the time it’s just jibberish and she’s in her own little world having conversations with herself, our cats, toys, and sometimes us. She loves interacting with us, her grandparents, and our neighbors. She will play with other kids, but needs about 10 minutes to warm up

And come out of her shell.

She doesn’t listen to directions 100% of the time. I would say probably about 30%.

When I see friends post videos of kids her age, they seem so much more advanced. I’m constantly stressing over this. Her pediatrician said if she doesn’t have 10-15 words by October she will need speech/early intervention.

I’m literally panicking about this 24/7. Someone please help me in any way.