15 month old naps/doesn't

So we've had construction and or people just stop by abruptly family friends a sales person. Ring and knock.

This happens several times a week.

My son is 15 months old and wakes up immediately when this happens. Today it was 2 minutes after falling asleep. What to you do? He then will not fall back asleep and I have a screaming toddler the rest of the day.

He is sleep trained will not cuddle.

I am also newly pregnant and exhausted. My husband works 12 hour days hour drive each way. 5-6 days a week. Naps are my only break too.

I have hung notes on doors and nothing works. Today alone a family member couldn't reach me as I was in the bathroom and just started checking for opened doors.

A sales person woke my son up to do driveways.

No one reads the signs....

I need a break....I am writing this as I am barfing....