Belly button piercing question

Me

So I took out my belly button piercing when I found out I was pregnant. I had it in for probably 6 years with no problems. Now I’m 28 weeks and out of no where the piercing hole is all red and irritated and quiet painful. Initially I thought somehow there was an ingrown hair but I don’t think that’s the case. I’m assuming it’s from stretching out. Has this happened to anyone else? How did you fix it?