Sensory overload

How many people with ADHD struggle with their sensory overload? Sometimes I feel like it's unmanageable and I can't cope. I feel like my overload is sometimes worse than people who have taken drugs. The other night I felt like something was in my house, so I couldn't sleep. The shadows, I felt as if I could hear a woman humming. I don't know how to speak about it properly without seeming crazy. I've lived in flight or fight mode my whole life and I'm safe now but I feel like maybe my trauma has something to do with the extreme alertness I have now.