Things fell apart at home

I've been at a roadblock with training my mini pony because my teacher wanted me to take a positive reinforcement class.  One was offered last evening, so I enrolled and after work drove out to the farm.   The darkness challenged me.  I couldn't really see where to turn off the main road so passed the country road  and turned around and came back.  Then I drove slowly until I came to the farm drive.  The lesson began late because the owner of the farm felt terrible with an upper respiratory infection and my instructor had to take care of the horses first.  We worked on targeting which Dory did very well.  We tried prepping her for side stepping but she wasn't having that and reared.  We called it a night.  I drove home through the city stopping to buy a money order.  When I got home, my son was just leaving our house.  I stepped inside and could tell that my husband was upset.  I asked him what was wrong and he commented, "Too many animals and people."  Apparently he spent the afternoon letting the animals in and out.  And my son, daughter and two grandchildren were there for a bit.  I spoke with my son today and he said he could tell something was bothering his dad also.  We wonder if it is work.  My husband went back to work and drove five days this week, but he is  scheduled for only 2 days next week.  The lack of a consistent schedule could be bothering him and then his sad/bad mood is exacerbated by the dogs who won't settle, hunger (I don't think he eats well when he's at work), the commotion of my son, daughter and the babies.  I watched some basketball with him and we ate dinner.  I'm concerned because I have a four day trip planned for late February/early March.  I'm not sure my husband will do well if he is at home by himself.