POCD Real Event/False Memory destroying me.

This has been my biggest obsession for the last few weeks, to the point where I can barely even get out of bed. There's like, one big memory that keeps popping in, with a bunch of other "what ifs". All involving my nephew. The big memory in question is, at one point, my mom was forcing me to clean my nephew because she was busy, and I normally refuse to clean up children. I wasn't able to touch him to actually clean him, so I ended up putting him in the shower to try and spray him off in a panic, which didn't work either. I broke down and cried in the bathroom. But now I keep convincing myself that I did something bad to him. Accidentally or not. I keep getting an intrusive image of me touching him badly that I don't think is real, but I can't prove it. In addition to this, my mind just keeps asking "what ifs" "What if you enjoyed it when he'd climb all over you when he was a baby?" "What if those accidental touches and brushes weren't accidents?" "What if you're looking at him inappropriately on purpose?" My mind has pretty much turned every memory involving him into a POCD soup. I legitimately cannot tell you what the truth is. The truth I WANT is that I'm just overreacting, that I hadn't actually enjoyed or wanted any of these things. But my mind has so thoroughly convinced me I'm a monster that I can't calm myself down. What makes everything more confusing is that my nephew loves me, and my family doesn't see me as a threat to him, hell, they've even said I'd make a great dad, if I ever wanted kids. (Which I don't, regardless of POCD.) So now I feel as though I'm "lying" somehow. That I've put on a front to make everyone think I'm safe so I can do more wrong. Even though that's... Not what I want at all. I just don't know what's real anymore. I don't think I had done anything wrong, but my brain keeps telling me that I'm lying to myself. Any time someone tells me I didn't do anything wrong I end up telling myself that they're lying.