Do not overthink of an imaginary event. We humans always tend to think negative when something not happens as expected.
For example, my grandmother always gets scared when I don’t recieve her call around 10:30 pm. Because sometimes I put my phone in silent mode while working. It’s not her problem, but generally it’s humans habit to behave in that manner.
It happens with me as well, when I call someone, and they don’t recieve it. But, I understand that I should stop overthinking. And continue the work at hand. The person whom you called may be involved in some other work.
Stop overthinking