My belly button piercing got infected I took it out at 17 weeks and I'm now 26 weeks with no infection I'm just gonna get it redone after my little man gets here. Best thing I can recommend.
Maybe u should just leave it out till ur baby born ..
Bactine , you can get it from drug stores or Walmart
Salt water is the only thing i recommend unless you go to a professional and get it looked at.
Warm Salt Water Is The Best Way
Try water with warm sea salt that's how I cure mine when it decides to get nasty