I left my girlfriend stranded two times in a week

For the 3 years we have been together I have always been there to pick her up on time, but I recently started a job as an order picker where I walk on average 20 miles a shift, and it has completely wrecked my body to the point that not only did I fail to pick her up from work once, but twice this week.

This morning I had my phone alarm set and the Alexa set, but I wake up to one dead and the other unplugged. I don’t even know how that happened it’s so frustrating. Like seriously infuriating.

She wounded up getting a Lyft home, and now she’s pissed and won’t talk to me at all. I feel horrible but I’m also so tired. I currently put in around 4 hours of work into one job and work 12s on the other. I need to do this at the moment. She gets off at 7am.

I really dont know