Helix piercing / bar too short?

So I got a helix piercing April 26th this year.

Sadly I didn’t get it done by a professional which I regret…just went to another place cuz it was cheaper.

I’ve heard that they can take a long time to heal.

But I feel like somethings “wrong” w mine, cuz it won’t heal, my ear is swollen & it hurts sometimes. I clean it daily & take care of it. It & I don’t wanna take it out/remove it forever cuz I rlly like it. I think that the bar might be too short & that I might need to change it:).

But idk how long the bar should be/what should I order?

(Sorry didn’t know where else to post/what category so just posted here lol)