I feel so alone

I woke up this morning realizing I would be 8 months pregnant exactly. I immediately started crying and became very depressed. My boyfriend doesn't understand he keeps just saying it was a sign that I wasn't ready like that's supposed to make me feel better. I am in so much pain I can't feel anything but guilt and sadness. I blame myself. Maybe if I wasn't so clumsy or if I ate better or if I got more sleep if I remembered to take my vitamins everyday. I feel like I did everything wrong.