Belle, don't worry about that, all moms have the panic response when they don't answer. I have a couple of instances where I have done the "all night" didn't answer the text thing. It starts as an innocent call, then when no answer after repeated calls, I spiral into the planning the funeral thing
When my oldest was home for Xmas his freshman year, he didn't come home one night. I paced the floors, calling and calling his cell phone. I was never so happy in my life when I got a call around 4:30 that started like this - "You have a collect call from inmate (and then in his meek voice) - name inserted - if you choose to accept....."

He had gotten an MIP and was in jail. I was SOOOOO happy he was in jail and not a hospital or in a ditch somewhere!!!
We moms are allowed to worry!!