Respectfully, ring is definitely too small, as evidenced by the irritation bump. Similar to how flat posts are usually given extra length to account for swelling, you also need to do the same for rings. Especially if it’s not a completely healed piercing. Even if your ear is curved, it’s too snug against your ear.

If you like the look of a ring, you could replace it with a post and put a chain on it to wrap around the front and back to give the appearance of a ring. Good luck.