Feeling defeated

Sidney

My son is 18 months and at his appointment today I brought up that he isn’t talking. He says mama, baba, yay and that’s literally it. He use to say dada and make some animals noises but he won’t anymore. He won’t look me in the eyes he doesn’t answer when I say his name. So my dr got us an appointment with the audiologist to check his hearing and also a speech therapist for evaluations. I feel so scared for him. I don’t know what’s going on and what to do. He is advanced in every other milestone but no talking he won’t even pay attention to me when I try to work with him. I just don’t want him to have a difficult time with anything. I’m not sad for him because he is loved no matter what I just don’t want him to have difficulties for the rest of his life. I’m just feeling lost