Night terrors

I freaking hate them!

My son has them and I get so worried. He also talks in his sleep and says “no dont” or “its getting me!” while blindly staring at the ceiling. Its always followed with screaming at the top of his lungs, crying, kicking and flailing his arms. Tonight was the worst, he woke up(I think) crying hysterically and screaming, he started gagging on his own salvia and that lead to throwing up everywhere in bed. He was definitely awake after that. He was breathing heavy, crying and physically trembling as he hugged me. We then went to the bathroom incase he got sick again. He eventually calmed down, cleaned up and we went back to bed. Then 5mins later he started crying and talking in his sleep again, asking where his sister was, yelling for his Dad, and then crying saying “no dont bite me!!” This happens about once a week or 2 weeks.

Is there anything we can do to help him? I hate this for him and he gets extremely worked up. And my anxiety goes through the roof.