is caffein free soda ok

N • NV
Before I was pregnant I never like to drink soda much only once in a blue moon do I ever. Now I'm pregnant I just want something fizzy. I got some caffeine free Lemon lime Sierra Mist. I don't drink it everyday but I do drink it. Is it safe? Now I regret it. Some people are saying it's ok and some are saying it's not! Help. What do you ladies think.!?