belly button

Hope
Okay ladies, I got my belly button pierced when I was 16. I took out the ring when I was barely 6 weeks pregnant and it soon closed up. I'm now 30 weeks and the more my belly grows it stretches out the old piercing and it has opened back up on the inside and is now infected. Any tips? I've been cleaning it daily to try and kill infection and prevent further infection, but it's not quite working. Is there a way to get it to close back up and keep it from reopening again with my growing belly? 
I should've listened to my momma when she said I'd regret getting it pierced lol