Why did OCD start all a sudden :(((( Out of no where and I’m and adult.

Anyone else develop it in their 30s? I’m 33 and just started showing symptoms in October 2024. So far have only been diagnosed with GAD , PD and depression.I started having intrusive thoughts after a series of panic attacks . My compulsions would be googling. I have made an effort to stop though because it only makes me feel worse. My intrusive thoughts have been around fear of going crazy

Hi, I’m new here!! I’m praying I don’t get judged for this. But, back in late May of 2022 ( literally right before I graduated high school), I added this one random girl from my school on Snapchat. She posted something about a graduation party , so I swiped up on her story basically saying how I can’t believe we’re almost graduated. She replied and we had a really short and simple conversation. The next day ( i believe) , we started talking a lot , and I just so happened to see her at the highschool when we were grabbing our graduation outfits and doing the rehearsal. When I saw her irl, I kinda got turned off ( I heard she was kinda crazy) , and on top of that , she was a little ugly irl. I remember seeing her Snapchat bio , and she was close friends with my female cousin ( a year younger than me) , who I happened to experiment sexually with when I was 10-11 years old. I remember going to work later that day and having sort of a lightbulb flick thought ( it wasn’t a good thought though) , what if my cousin told her about what happened when we were younger? So I started to kind of panic and immediately distanced myself from that girl. I also experimented sexually with one of my female friends when I was 10-11 , and from that day onwards, I’ve been pretty much living in paranoia and a little bit of guilt about someone finding out and my life being ruined . On top of that, It’s gotten worse to now sometimes I wonder if a girl I added off of quick add ( Snapchat) is underage even if they told me they were 18+ or had 18 and above in their bio, and I get so much guilt and anxiety about that. I even had a quick thought last February on what if I did something inappropriate with my younger cousin when I was 15-16 but I just can’t exactly remember when it happened , and it still eats me alive when I think about it, because I don’t know if it happened or not. I’m sorry for the long vent, I just wish I felt normal again. No matter how much I try to do things that old me used to do, life always feels “ off”. I always kept the top part about when I was younger a secret up until early (ish ) 2024, then I vented to one of my best friends and he told me that that’s a normal thing to do at a young age. Since then, I have told multiple friends and they all say they did similar stuff, but my brain just can’t accept that. Please help me, I quite literally overthink everything nowadays. 2021 was the last full year that I felt normal ( coincidentally, the best year of my life so far) . It’s not just about sexual related things either, sometimes I’ll wonder if I messed up something at work or hit a car while driving/hit someone and drove off. I just wanna live my life how I was supposed to live it after highschool ( carefree and happy) before whatever it is ( I think it’s ocd) hit me unexpectedly. Thanks to anyone who read this , I just needed to pour it out regardless of how negative I felt typing this, I hope someone can relate , because I feel so alone in my head at times.

So basically I didn’t know till my hocd started. But looking back at my life I had ocd since I was a kid. Like 6-7 years old. First time happening I remember that when I was doing stuff many times I had to say something like a little poem in my head to stop it. Then I had this thing were if I felt my left foot touch the floor 5 times I had to do the touch the floor with my right foot too. Then I had something I guess contamination??? Basically after washing my hands I had a sensation on my hand like I could still “feel” the germs and I had to wash them again. Then I started having thoughts of my family members getting hurt. I had intrusive thoughts about me hurting my dog. Then I had this obsession that a guy who used to be in my school is looking for me to beat me up. And how it’s this obsession about my sexuality even tho I never doubted or questioned it before. Is that possible??? Like can you be born with it? I’m pretty sure both my parents have it too. At least at some level. Take my father for example he had an obsession that he was going to die the moment he turned 30.