Recurring irritation on genital piercing?

I have a triangle piercing. I got it a couple of months ago and it seems totally healed now. Every few weeks, sometimes more often, the right side gets really irritated. Today, it's slightly swollen and if I sit wrong, there's a really sharp pain. It gets better after a day or two of not crossing my legs, but it always comes back. I think part of it is that I tend to cross my legs, but that doesn't explain why it's sometimes worse than other times and why it gets swollen. I do NOT want to take it out. Is there anything i can do to keep it from coming back?

 

Anybody?