Irritated

So at 11:30 I get a phone call telling me I need to pick Makayla up from school because her mother can't do it. This is just wonderful now I can't put Christian down for his nap. If I knew I had to be somewhere by 2pm I would have put him down for his nap at 11am since he naps for 2 hours. Now I will have to deal with a fussy child until after 2:30pm because I can't put him down for his nap until we get back...This has really thrown my entire day off. I can't do the cleaning and cooking that I need to do and dinner will be pushed back to a later time. This is incredibly irritating!!!