So frustrated

My SO have been TTC for four months now and this week is my fertile week. It just so happens that he was scheduled to be gone today and tomorrow for work, so we BD’ed Saturday and last night (the first two fertile days) and Tuesday and Wednesday would be the days with the highest percentage, and he was supposed to be back for those days. Well he just called and told me he has to stay for an extra day so now he won’t get home until late Wednesday night and I am like super upset. He didn’t even seem like he cared. Am I being stupid?