I had a mental breakdown because of a dog and Xanax

So I am a 22 year old guy and have been dealing with anxiety since the end of last year. My family got a dog in March and I haven’t been able to handle it. I couldn’t sleep for a day or two in a row this past week, and somehow convinced myself that dogs weren’t real. I went this close <—- to going to the emergency room because I thought I was losing my mind. I don’t know if this is a common thing for anxiety but it should be in all the pamphlets. I really thought dogs weren’t real for a minute, and because I was delirious, I took a whole 2mg Xanax pill. Now I am actually losing my mind and I’m not sure how much longer I can last like this. I cannot focus on anything, my head is pounding, and I feel like I’m floating. It just goes to show you that dogs can somehow mess up your mind even if you’re just sitting in your room ignoring them. Do you think I need to go to the hospital? It’s so scary to think about going there, I’m dizzy and disoriented and any sudden movements make me lightheaded.