need advice!

so i’ve been stretching my ears for a while and one is significantly bigger then the other, because i’ve had alot of problems with my left lobe. but i’ve left it so long the plug just keeps falling out and is begging to be stretched but every time i try to up it just won’t let me, it is the next gauge up so it should fit. i think i need a half mm but i’m scared because of the issues i’ve had with it in the past and really don’t want more issues. i’ve been oiling with jojoba oil a lot and cleaning regularly i’m thinking of just trying a hot shower and stretching in the shower. would it help ?