Intrusive thoughts, pure obsessional ocd?

I've been having terrifying thoughts. they're like a movie playing out in my head and i can see every detail.

the thoughts are always the same. it's of me, in all black baggy clothes. i pour gasoline all over myself and throw a lit match into the puddle below me. i feel numb when i think the thoughts. not emotionally but physically. sometimes i've even had urges to try and do it to see if it'll make the thoughts stop for once.

they've been haunting me for the past few days. they're so vivid and i wanna cry whenever they come into my head. i DON'T want them, i DON'T wanna try burning myself, but it's so tempting sometimes, even if i know it'll kill me. I'm not suicidal but the thoughts are still there and i'm scared my ocd is coming back

i haven't had an ocd relapse in a while. i still have the little quirks to sort out (not stepping on cracks, hating even numbers, etc), but usually it's pure obsessional ocd. when my past therapist told me about it, i was like, "woah, that describes me so well at times!"

i'm mainly scared becuase what if my trich starts acting up? or my tapping and counting compulsions? i don't want that on top of the other things.