I don't know if any of your piercing people might be able to give me advice, but I got an ear piercing on my low helix about... 9 months ago? and it's still incredibly painful if I bump it or it catches on my hair. I can't sleep on my right side because of the discomfort. It's kind of decreasing as time goes on and I like it but I'm wondering if it's worth the effort. Are all cartilage earrings supposed to feel this way?
Sorry for the late reply, only just catching up on the thread now.
Cartilage piercings are notoriously slow healing and can take up to 12 months to heal. The reason is that there is very little blood that flows to the area. When you see blood from the piercing procedure, that is actually from the skin that covers the cartilage. A good piercer will produce minimal blood as you can actually see the blood vessels in the ear if you backlight it, so they're easy to avoid.
It doesn't sound infected, just easily irritated and perhaps healing slower than it should. If it was infected, you would
know, it'd feel hot to the touch, there'd be pus (most likely green in colour), you'd be aware of it all the time and you would actually feel bodily sick too.
One thing with cartilage piercings is that the jewellery selection is very important. This is the case with all piercings, but I'm emphasising this for cartilage piercings because of the different way they heal. The jewellery gauge should be smaller than the hole that is made, this is to account for the skin that needs to grow over the top of the cartilage between it and the jewellery. If the jewellery is a snug fit at the time of the piercing and after the initial swelling has gone down, it will give you a very hard time. This is aside from the material the jewellery is made from and the quality of it (threading, polish, etc).
Captive bead rings are not a good idea for cartilage piercings because they move on their own a lot more, which increases healing time (as it disturbs newly healed tissue) andthey catch on things more easily. They also force your body to create a curved fistula instead of a straight one, which can also prolong healing. Diameter of the ring will matter too, which has the same effect of a barbell that's too short. I don't think this applies to you as I believe you have a barbell in there, but I thought it worth mentioning anyway.
If it's worrying you, I suggest going to a piercing studio and having it looked at by an experienced piercer. The good ones will be happy to help you, even if they didn't do the piercing themselves, and give you whatever information you need. I believe I pointed you to
The Piercing Shop a while ago after speaking to my piercer about reputable places in Brisbane. I forget the name of the head piercer there, but he said she is very good.