Yes, this is quite normal. You've had a shock to your system. It takes the body time to adjust. I had lots of small aches and pains and tenderness in the area. Each time something moved, I was worried that there was something really wrong. But, it was just post-op, getting used to something in my body.
Mine was unexpected too. It is a bit of a shock. You may also feel hesitant to do anything. That's fine too. You need rest and time. Follow the 'what not to do' rules about lifting things and so on. Take your time. When I returned to the gym, I was quite nervous. I am now 8 months in and attending the gym regularly, regaining my confidence and strength. Slow and easy.
You will regain your confidence and nervousness and worry will fade. Last year on my 75th birthday (pre-pacemaker) I did a major deadlift. I was teasing my trainer about what we'd do to celebrate my 76 birthday. She said, "we will celebrate that you are having a 76th birthday."