Figuring out if I have OCD

How to know if you actually have it or if I’m just making up the symptoms? I have a lot of intrusive thoughts constantly and even have a “theme” but it really surged after I search up what I was experiencing, but then again I search up a lot of what I experience and constantly have to recheck things. My parents say I’m normal but I know I’m not, (both of my siblings have adhd) I find it immensely hard to focus from turning 17-18. Please let me know what you think l! Thanks!

Hey, so I've never actually been diagnosed with OCD. I did a little bit of research, I always thought OCD was organizing things. But I'm not normal, I have this thing where I feel something isn't right. I obsess over it or if I brush my hand over something correctly then it's fixed. Or I have to do this thing on stairs, I'll walk up a few or down them because something isn't right. I read this thing on memories. I know something happened, but then I doubt myself to the point I don't know if it happened. And I think too logically in relationships. I'll put statistics on things and if they might not work out I distance myself, there's other odd things I do. My family always told me I was fine but then said things like I was messed up, and said to just ignore what I felt. Like I was making it up. I don't know what to do, I don't have a doctor currently, I was never diognosed. Is there a way to be sure I have it? Or a way to stop everything? I just want to stop everything, please and thank you. Sorry for the long post. If anyone can help, I would be so thankful.

i’ve thought that i have OCD for about 2 years now, but i’ve had a lot of the symptoms for as long as i can remember (but i don’t really remember a lot of my childhood- i need to check w family to confirm). i’ve talked to my gf about it, and she thinks i just have GAD and am a hypochondriac. i definitely do have GAD, but the things i have obsessions and compulsions ab aren’t just health related (even tho a lot are), ill imagine that people are injured or dead if i don’t hear from them, i ruminate on childhood events and think about if i could have changed things, i blame myself for things that aren’t my fault, i check all of the locks in my house every night to make sure nobody can break in (even tho ik they’re locked), etc. my GAD more shows up in worrying about like worrying about an upcoming exam or about going into work, or that my friends/family/gf are/is mad at me. i know you guys can’t diagnose me, but the i can’t see a therapist on here until i am able to tell my current therapist that i need to see someone else. i just wanted to talk about it i guess, ive taken so many online quizzes and psych classes that i feel like i somewhat know what im talking about.