How long does it take you to wind down after a stressful situation?

I’m in the process of learning about my anxiety and there are times when I’m not sure if my worries are rational or irrational. I tend to take a long time to calm down after a stressful event and I want to know if this is normal. —or if my meds need
to be adjusted—

For example, my middle child took my husband to work early this morning so I could have the car for the day. My son should have returned by 6:15 am. I woke up at 6:50 am and noticed he wasn’t home yet. He didn’t have a phone and it’s mostly open field between our home and my husband’s work 4 miles away. I hoped for the best and thought he had possibly stopped for a breakfast sandwich, but I was also worried because it was very foggy, frozen fog in fact, and it is the last weekend of deer hunting season. Deer are on the run.

I finally received a call from my husband at 7:45am. Our son was there at his work, frozen from a 2 mile walk wearing moccasins with no socks and pajama pants. Thank Gummy Bears he was wearing a coat. He swerved to miss a deer on his way home and ended up in a snowy ditch. The deep snow probably saved him from getting hurt and causing damage to our only working car. He’s fine and our vehicle is fine, but the worry and stress took everything out of me for the entire day. I was anxious, stressed and tired all day.

Is this normal?

I don’t want your answers to be all about my situation. I hope to learn from your examples.