Should I change my earrings after 6 หลายสัปดาห์?

That depends on the earrings and your ears. I have a pair of 16 gauge “sleepers”. Sleepers are smooth rings, the same gauge all the way round, so that they can be rotated. Mine are anodized titanium and the card they came with said that they were rated for 24/7/365 wear. If your earrings are not bothering you then feel free to wear them as long as you like.
I am currently in the process of gently stretching my earring piercings. I took the sleepers out yesterday and replaced them with 14 gauge rings. So far they have not proven uncomfortable, although they are not rated for a length of wear. Disclosure: I make jewelry. I created these rings myself.
When wearing earrings in newly pierced ears, treat the area as you would a fresh wound, at first. I used alcohol when my ears were first pierced many years ago. ตอนนี้, as I am gently stretching the openings, each time I graduate to a larger gauge I clean them well and rotate the rings frequently to avoid them getting sticky. So far my gauges have been: 20, 18, 16, 14. I’m at 14 now and will wait a month before going to 12. I wait one month between gauges, and even then only progress if I can insert the larger gauge without discomfort. I think I will stop at 10. But so far, it has been four months since I slept without earrings in, and I am completely comfortable, and my ears show no signs of inflammation, thinning, discomfort or discharge.