hernia

Good morning.I had hernia surgery four years ago when I was morbidly obese. I know obesity can cause it.  I had  had RNY last year. I was told I had one after this surgery. I was hoping to wait to have it fixed when they removed excess skin from my tummy. In October I was sent to the ER for emergency surgery the hernia was wrapped around my bowels. At Christmas time I started with some pain in my belly button. 

Of course everyone thinks it is in my head. Well I went to the doctors and had a cat scan and it showed I have another hernia.

I have questions. Is this normal to have happen? Was it not fixed right? I have to have surgery in February has anyone had this happen?