For everyone who doesn't know me: I've been suffering from GAD and depression for 1,5 years now, and I think I've pure O since my childhood (which is not diagnosed). I had compulsive thoughts about hurting/killing loved ones or doing sexual things to them. I tried to ignore them at first but they got so weird, that I thought I must be a psychopath. As an example: when I saw a pregnant woman, I pictured myself punching her in the stomach, I was so terrified by my own thoughts and felt guilty as hell. I'm also suffering from HOCD, I was often ruminating till 7 a.m. figuring out, which sex I'm attracted to. But all those problems were fading when the anxiety and panic started. I had severe panic attacks for a few weeks, followed by constant anxiety and servere depression. I was in hell for like three months. This was when the first existential obsession started. In that three months I freaked out about everything. And then there was this thought: "What if I went crazy without noticing and my parrents are just part of my lunatic imagination?" This thought was so terrifying, that I thought about ending my life for the first time. But I made it through the days somehow and my anxiety and depression eased off and so did the thoughts. I was doing pretty good for about one year. I had a panic attack once in a while, but everything was fine, I could go out with friends, study and do sports; No suicidal thoughts. Only the thoughts about my parents sometimes triggerred fear in me, but I got it under control with distraction and a healthy lifestyle.
But everything changed last christmas. I was sitting at the dinner table with my family and had a severe panic attack. It eased off and everything was okay. I somehow knew I would have problems arround chrsitmas, because I feared all the stress. But I didn't expect it to be so bad. I had another panic attack a few days later (alcohol induced), and fell into the downward spiral of anxiety again. I thought it would never stop and had a muscle pain all over my body. Everyday was exhausting and I felt miserable because of the anxiety and muscle pain/agition. I coped with this symptoms after a few days, but my anxiety levels were still very high. And there was that one night, where I asked myself: "Will I overreact to those obsessive thoughts again?" and I imagined everything being unreal, and a major panic attack followed. That thought about living in a dream freaked me out and made me suicidal again. I knew it was just my imagination, but the impossibility of disproval terrified me. I imagined people being soulless or mindless and I panicked a lot. It was so bad, that I went to the mental hospital, but they didn't want to take me. The doctor just prescribed me a new medication and said I should continue my ongoing therapy, which I did. I distracted myself and tried to live my life as normal as possible and the thoughts vanished away. I also read alot about solipsism and after a few days obsessing about it, it started to bore me. But after a few weeks I developed a constant and high level of anxiety. I couldn't stop walking arround to ease my anxiety. I woke up with anxiety in my stomach everyday and then the thoughts came back arround. I again imagined nothing arround me being real and it caused a severe panic attack. Since then the anxiety attached to those thoughts again. I think about solipsism all day and the odds of being real or not. It made me severe depressed, and everyday is a battle right now, everything feels unreal and pointless, people seem far away. I'm so scared that it might be psychosis, I mean I always read about depersonalized people, who have these kind of thoughts, but I had never severe depersonalization. I felt unreal often and my environment seemed strange, like I was in a foreign land, while being in my hometown, but I always recognized others and myself in the mirror. And all the depersonalized people know, that they just feel unreal and don't really question reality. I do, because my imaginations seem so real. I mean how could these thoughts freak me out and make me suicidal, when I don't believe them? I also ruminate about things in the past, where I had crazy thoughts, which strengthen my fear of being schizophrenic. I have some examples. When I was a kid, I went to the hospital for several examinations, because I had muscle twitches. My anxiety levels were very high back then, because I thought I had a rare motorneuro desease. The first day they tested my heart in many ways, and the first night I asked myself, why they would test my heart, when I have nervous/muscle problems. And then there was that idea, that they would maybe want to steal my heart. This idea made me panick, but I instantly dropped it and never thought about it again, because I recognized it delusional. But wasn't it completely crazy and delusional to just come up with this thought?
Another thing occured, when I was a young teenager. It were holidays, my parrents were away and I was home alone for two weeks. I watched this paranormal activity movie and it freaked me out so much, that I couldn't stop thinking about it for a week. I was so scared there could be a deamon inside our house and I watched out for smallest sound or hint. But my fear vanished after some days. But wasn't this delusional? I know it's normal to be scared after watching a scary movie, but I was obsessed about it for a whole week!
All these things make feel like I must be schizophrenic. How can I not be, when I'm neither really depersonalized, nor seeing my thoughts just as a result of obsessive thinking/anxiety. I panic everytime I think about solipsism, and it's like a compulsion to think about it all day.
I really don't know how to move on, I was on such a good way, but now I hit rock bottom, every new day freaks the hell out of me. The only thing keeping me alive is distracting myself with computergames.

My current medication is Mirtazapine (30mg), Quetiapine (25mg), Escitalopram (10mg).
Sorry for the long text, but I really needed to share my whole story!
I'm really not sure how much longer I can take this.

best regards