Anyone else get anxiety in the afternoons for no reason?

Starting around 2-3pm every day I just get this weird anxious feeling in my chest. Nothing's even happening, I'm at work just doing my job, but suddenly I feel like something bad is gonna happen. Has been going on for like 3 months now. Started going to therapy last month and my therapist says it's probably just generalized anxiety but man it's exhausting. Does anyone else deal with this? Any tips besides medication?