An infection would be very red, swollen, hot to the touch, and really painful. It would also have yellow or even green pus. Yours sounds normal; white stuff is usually just lymph which comes out of all piercings. My navel has had a lot of lymph come out of it too, now that I think about it.
It sounds like you need to get a barbell in there instead of a ring ASAP. A bar won't get knocked nearly as much. Also, piercings heal best when they are left alone. I know a lot of people recommend twisting or rotating the jewelry to clean, but that does more harm than good. Try to just let it stay put. That's another reason barbells are better for healing, they don't move as much.
Instead of the soap, try using sea salt soaks for aftercare. They'll help draw all the nasty stuff out of your piercing. Also take the band-aid off so it can breathe.
I have 1/2" lobes and 11 piercings: left helix x2, both conches, both nostrils, septum, navel, and VCH.
My lobes are small but I know a lot about stretching and how to do it safely, so message me if you have any questions!