Hello! As someone with OCD who has tried various types of weed, alcohol, etc., weed definitely can "turn off" the OCD voice in my head. It's never been quieter than when I am high, especially if I feel mentally well that day! I can enjoy food, my own company, the company of others, much much easier. I've never had bad experiences since going to a dispensary, and most "horror" stories are a result of unusual types and doses (for example, inhaling a type of weed you have not ever tried before).
If you are interested in experimenting I will recommend a few things first:
1) Set up the space! I will agree that anxiety attacks can be scary if you are already high, BUT if you are prepared with an "exit strategy" (mine is cuddles with my partner, yummy food, a calming funny show like Modern Family, a weighted blanket and low lights), you can calm yourself down easily. Nerves and anxiety are normal when trying something new, so keep the rest of your space calm and relaxed! Make sure you have a sober friend or partner with some patience to keep you company and calm.
2) Know what you are taking! I would NOT recommend smoking or taking homemade edibles for your first time. Dosage and strain (aka the type of weed!) can be tricky. I would recommend a "drinkable" rather than an edible if you can find it. That way it feels more like drinking alcohol if you have experience with that! You can also go as slow as you'd like, and there is no need to finish the drink. If your only options are edibles, start low and slow, and with an Indica type. (INdica = IN DA Couch, SATiva = SAT up & alert!) Indica is relaxing and calm and does not cause the anxiety and alertness that Sativa can. If you have access to a dispensary, ask about their recommendations, many, many people use weed for anxiety and they can provide some great recommendations on what to stay away from and what to try. Doses usually start at 5mg per edible or drinkable. Start with half, or a quarter, and if you don't feel anything, wait another day and try again. Slow and low!
3) If you do get anxious (it might happen!), know that it does not last forever, and you have the power to regulate your mindfulness even when high. If you get anxious, there is nothing better than some water, a breath of fresh air, and going back to your safe space with your safe person. Avoid looking in mirrors, watching anything too dark or upsetting, or something that may trigger fixations or wandering thoughts.