I can’t stand my boyfriend right now

I’m 4 weeks pregnant and just found out a week ago. My partner and I have been trying for a year now and wanted this so bad. This is supposed to be happy times for us, but the last couple days we have been at each other’s throats. Small arguments over stupid irrelevant things end up blowing up and escalating into screaming matches. No couple is perfect, and we’ve definitely had our share of fights (we’ve been dating for 4 years), but I just envisioned this being so different. It’s really starting to tear me apart and making me wonder if this is a mistake. Im wondering if anyone else has experienced this during the early stages of pregnancy. Is it just the fact that we have so much on our plate suddenly? Is it stress about the future, and we’re taking it out on each other? I’m not sure but it’s making me feel sick, I feel like I’m being robbed of happiness during these times 😢 all I’ve been doing is crying