Septum piercing

Hello guys, I’m not sure if I’m in the right place! (Please let me know if not!) I was just wondering if anyone had any recommendations on where to buy jewellery for a septum online?

I have lost one of the balls from my piercing but I am on placement with the ambulance service this week and don’t have time to get to a piercing shop. The initial piercing was done 26/09/23 so I am anxious it will heal if I lose the piercing on one of my shifts. I’m from the UK if that’s relevant.