My ~4 year old male BP bit himself during feeding about 1-2 months ago. He held on, and started pulling with his head, and squirming with his body (I think he thought he caught his prey and was trying to constrict it, but of course this wasn't possible as he had bitten himself). I grabbed him and put him under running water, which caused him to let go and all was fine. I just fed him normally and put him back in the tank. I looked at his scales and body during the time, and it looked slightly red, and some of the scales seemed out of place, but overall he looked okay. I've given it a lot of time, and it swelled up (nothing drastic, it just looked slightly abnormal), and became red after a couple days. It soon went down until it was just slightly bumped up, and I figured it was almost healed. Well, it's been at least a month and a half and he still has one large prominent mark, and at least two smaller ones. They all look like they are filled with fluid, and the large one is slightly red on the bottom. Oddly, the large one is in the middle of his body on one side, and the two small ones are right next to eachother on the other side. I don't recall him biting this many points of his body, but I suppose it's possible depending on how he was coiled up as I believe he bit himself on two parts of his body when he struck. My question is: should it still be abnormal? Is there a problem that I would need to consult a vet for, like an infection? Could this also be something totally unrelated that I think is just his bite?
Any help would be very appreciated, thanks!