Caffeine while TTC

Okay, so my husband and I have only been TTC for a little over a month. I started my period a few days ago and have been DYING to have caffeine! I completely cut caffeine out of my diet as soon as we started trying, changed a lot in my diet, and I’m taking prenatals daily. Is it bad to have an energy drink knowing I’m currently not pregnant?! This is my first time TTC so I’m trying to do everything right!