I need advice, going INSANE

One of my biggest ocd compulsion, is like my body parts changing into something else, like im right now super afraid of my eyes changing magically differently, / position of them etc, like if i do something im convinced this ”would” happen, i know it wouldnt, but im so freaking scared, and most part what makes it worse is people saying things u think are manifestation etc so now im even more afraid bc im like am i manifesting this?