First night of work

This is going to sound so whiny and stupid. But tonight is my first night of work at Amazon. I'm only working part time, just 4 hours (8:30pm-12:30am) 4 nights a week. It's been almost 4 years since I've had an actual job where I have a set schedule and have to punch a clock. And tonight is the first night in just over 2 years that I have missed bedtime with my son. I'm just feeling a little sad that I'm missing it tonight. I've been gone for 30 minutes so far and I miss him so much 😭😭😭

I know tons of moms work and I've been so blessed to not work since before my son was born. It's just hard tonight.