iPhone 6 Storage problem. Virus?

Hey, I have an iPhone 6 128 gb and the other day I found out my storage was filled up. I only got the device 2 months ago and I know that can't be right. I connected my device to my computer to check what was taking up the space and 97 gb of the storage was within documents and data. I have been traveling and connecting to several Wi-Fi's so I fear it could be a virus of some sort. Anyone in here have any idea of what this might be, or have experienced anything similar?