Responsibilities

I'm pregnant now for 13 weeks. I've been feeling down lately because my partner isn't that much supportive nor caring. He wants to keep the baby believe me. He was happy about it at first. But now, I don't even know what to do. He always gets mad at me and short tempered and i'm so sensitive about it, my tears just start falling. They say I have to focus on other things because what I feel is what the baby feels. What should I do? I'm only 23 years old and my friends don't actually know what to say about this matter because they haven't encountered problems like this. ?