Should I Be Worried?

[siameseAmethyst]

I've noticed this little bump getting bigger on the bottom of my Bettas top fin kinda joining to his back and its a bit bigger on one side than on the other, just wondering if I should be worried or not? I think his got a mild case of fin rot too -_- I'm treating that with at least 25% water changes every day, his been on and off with it for over a month now though, just when I think his better he gets it again and starts getting little hols in his top fin :/
His levels seem fine, the ammonia was a little high about 2 weeks ago though, I got that down with water changes and some seachem aquaguard.
Amonia now -0
Nitrite- 0
Nitrate- 5-10
Ph- 7.2--7.8

 

[Fanatic]

Unless it affects his everyday life, such as swimming, eating, or anything in general, then I wouldn’t be worried.

 

[Iverg1]

Looks like he bumped or bruised himself how old is he. I know bettas spines curve a bit when older. That looks like a broken back to me

 

[Fanatic]

There's nothing wrong with his back, it's the small bump at the start of the dorsal fin.

 

[A. Rozhin]

I'd be more worried about what looks like popeye in his left eye.