Ive had my nose piercing for two weeks..help!?

Dear god please don't get pierced with a piercing gun...especially on something through cartilage! Go to a real piercer and have them help you out - they will have a glass retainer. What you got is likely plastic and not appropriate for unhealed piercings and then you need to keep that in until it is healed which is typically 4-6 months when done properly but yours could take longer since the gun causes so much trauma. Whoever pierced you is an idiot...