My 8 year old silicone breast implants started making noises on my second day in CO. Is this normal?

I had silicone breast implants about 8 years ago and 3 days ago few to Colorado from Texas. On my second night here I started hearing popping and gurgling sounds , from my chest! While I've been reading this is normal for high altitudes for those that have recently had surgery, I couldn't find anything for ones that were older. I've flown many times in the past and this is the first time I've had this issue. Is this normal??