why does he become a jerk when we find out im not pregnant

my husband and I have been trying to get pregnant for a few months now and this month I'm 5days late and we took the test hoping that this is it I have to be cuz I'm always on time every month but nothing the test said no but then after he sees that its not he became the biggest jerk ever like its my fault I'm not pregnant sometimes we fight about it its so bad sometimes I just think I'm glad I'm not pregnant but I so want to be I just dont understand why he has to be so mean