Feeling overwhelmed

Is anyone else feeling overwhelmed or depressed and hopeless during pregnancy? I'm going to be 8 weeks tomorrow and have my first ultrasound on Friday. I've been feeling very sad during this pregnancy. And my husband just told me he isn't sure he can make it to the ultrasound apt on Friday now because of his work schedule and that really hurts my feelings. I planned the apt around his work schedule prior to making the appointment. I guess I just feel like he can try a little harder. He never has problem taking time off of work when he needs to.