My belly piercings gotten really dry lately, what can I do to stop this? I've only had it for about a week

Try an ointment like Bacitracin; my tattooist recommends this for keeping ink hydrated. Avoid Neosporin--many people are allergic to it's main ingredients. Apply it above and below the piercing, then move the ring a bit to get it inside the pierce proper. If you're still having problems, contact your piercing artist! :)