Did my guinea pig rape the other?

I’ve been holding off on asking this because it seemed stupid, but I’m actually really concerned now. About 4 days ago, I noticed that my older, fatter guinea pig was walking weird. It looked like he was crawling or laying on the ground and scouching his legs to move. This might seem confusing so just imagine a human with both their kneecaps and shoulders broken. He also had a huge amount of semen/boar glue on him - about the size of a quarter. It was really disturbing. I noticed that my younger, slimmer guinea pig had ruffled up fur. I assumed that they had a fight and removed my younger guinea pig from the cage immediately. Later, was told that the younger guinea pig was humping the older one. My older guinea pig is the less dominant one and is very passive. He couldn’t even walk to go get his food after the assault, it had to be brought to him. This has happened before, but the boar glue was always no bigger than a pea and my guinea pig has never struggled to walk like that before. After soaking and cutting the boar glue out of his fur, I tried to see his belly but I couldn’t because he kept wincing in pain as I tried to pick him up. Finally today I was able to pick him up and his butt looks a little weird, like more exposed. I know this probably sounds so dumb but I’m very concerned. Also, the day after the assault my guinea pig was walking normally again but today he’s walking weird, like his front half seems to be fine but his back half seems a little slow. Please help.