Every so often I remember that the code I wrote is running in production and real customers are using it and I feel a little bit sick

When i think about the only code i put in 'front' production for old company (not an intern tool), it's not that beautiful code, but, it's easy enough to read, has few documentation and work great since a year and half.

I think when your product work is safe, you cwn the start to be proud, even without documentation or unit test. (would be way better if it would have a full range of test yeah but it's a good start)

I'm deploying this morning so from 11 am real customers will be interacting with my code. I hope there are no major disasters.