Is this more likely to be POCD or pedophilia

My worries over whether or not I am a pedophile started six years ago when I was 18 and working with children. There was a small girl that came up to me and was eagerly hopping up and down right in front of my groin with her arms up because she wanted me to come with her, and I started having an erection. When I went to find a place to sit and she decided to sit on my lap, and I found that my erection was not going down. It did not make me feel any more comfortable when she was then kissing both of my arms, or when I tried pushing her off me and she just made a big fuss and fought to stay on.

This all ended up creating a lot of stress and anxiety for me and made me feel practically broken, as this was what led me to worry that this makes me a pedophile. This was made worse by the fact that I would sometimes get an erection again when the girl hugged me or wanted me to carry her. All this terror and depression that I could really be one of the world's most despised types of people just spiraled into constant confusion, obsession, and inner turmoil over whether or not I am actually attracted to children. I lost my appetite for a while, and I cried over this a couple times.

I later also wondered if this could have had anything to do with a time several months earlier when I was carrying her (She really liked being carried around by me a lot). That was when she started slipping down and so her feet rubbed against my groin as she was climbing back up, which caused me to have a bit of an erection, though I did not think much it at that point. A little after that while I was pushing her on the sing I had a bit of a funny feeling in my body, though I was not having an erection, so I'm not really sure whether that meant anything.

I've once again become so anxious and confused about this lately. I really don't want to be a pedophile, but it's difficult to see how else this could have happened. I just can't figure out what that all meant. Based on all that, how likely does it seem that I actually am a pedophile?

Having an erection doesn't exactly = sexual arousal, as I often wake up with one , or could stimulate myself with nothing in mind and have one, it's simply a reaction to outside stimulation.
The danger of this is that our mind and it's dopamine is easily wired to what gave us an erection. So your mind will establish and condition your dopamine to spike (search out mate/reward seeking) based on the last thing that gave you an erection. This would normally go away in short order, but due to the obsessive nature of someone having OCD (which directly thrives off of reward from reassurance seeking/checking) You're still going to have groinal responses and sensations , even though it's related to something you inherently don't like.
Many people who develop HOCD have done so based on porn use and having elevated their genre to watching gay porn. From that they develop a fear of being gay and commonly have groinal response because of that factor.
Now to be clear a groinal response can be an indicator of high anxiety/stress/adrenaline, so I'm not limiting it to someone having "an conditioned stimuli"

What you have is OCD, and OCD will latch onto anything that will help it survive.
Think of it as an unwanted addiction... it's not something enjoyable , but it thrives off of the same reward circuit as all addictions do.
So in order to get over the addiction.. one must resist compulsions. Makes sense?

I don't know how to stop worrying about this. I really don't want to be a pedophile, but it just feels so counterintuitive to think that what happened may not mean that I'm a pedophile.