My dog is incredibly anxious outside

My rescue is the absolute sweetest little bean and so cuddly in the house but the second we step outside she’s on high alert. We’ve done intensive training but it just feels like she’s getting worse. She loves playing fetch SO much but now she hears a single sound, not even the loud truck noises that used to be her main trigger, and is DONE. She paces, cries, full panic and full strength pulling to get us back inside the building. We just started anxiety meds but I don’t know to what level they will get her to and I cry everyday because I hate seeing my happy playful dog turn into this absolute basket case everytime we have to go potty or try to get energy out and I don’t know what to do anymore.