I Felt like Crying During hard Sparring Yesterday

Yesterday it was sparring day and it was very intense, I got hit hard in the face multiple times, on the nose cheeks eyes etc, and after some time hard sparring I started feeling my eyes twitching, watering and that feeling you get when you’re about to cry, I was feeling like I wanted to cry, and the more I got hit hard the urge of crying was growing more and more.

And the weird thing is that I wasn’t sad or emotional, it wasn’t because of my ego getting crushed or anything, I’ve had my ego crushed many times before across different disciplines and I never felt something like that, I’ve been punched and choked out hard many times before but I never experienced that weird reaction of crying, so idk what that could be.

I held back and I didn’t let myself cry, because I didn’t want everyone to see me crying thinking it is because I’m sad or anything, although the urge was strong and I was thinking “damn it I’m not as good as I thought” if I had to guess I’d say that feeling of crying was a result from the repeated hard punches triggering a sensitive reaction on my nerves around my eyes or something like that.

But I’m not a specialist in this subject so I’m not really sure about it, I’ve never seen that before happening nor heard of it as a thing that does happen when hard sparring in person or on the internet or anything like that, so I’m really curious to know is this a normal reaction and what could that be? Has that ever happened to you before?