Excessive crying 8 year old- please help

Hello. I am new here. I have an 8 year old son who is likely autistic but we are still waiting for a diagnosis. I am getting very worried about how often he cries. It’s usually if he’s hurt himself (even a tiny thing like a graze), or when he gets frustrated at someone. Sometimes the crying is so bad he ended up having a panic attack where he thinks he’s choking and can’t breathe. It’s causing a lot of friction in the household as my husband thinks he’s doing it for attention and it should just be ignored. Whenever is happens my husband get very annoyed and this makes me even more stressed. I feel like I am living in a state of constant anxiety waiting for the next crying episode to happen and trying my best to hide it from my husband when it does happen. Like when my son is out playing on the street I will keep watch for a kid coming to tell me he’s crying then I’ll answer the door before he rings the bell, go out and calm my son down and bring him back, all in the hope that my husband doesn’t even notice it has happened. I feel like I am walking on eggshells. I feel bad for my son as I don’t think he can help it but we aren’t getting any help as he hasn’t been diagnosed yet. I also worry that kids won’t want to hang around with him anymore as he’s always crying. I don’t know what to do.