Short fuse and always angry

I'm 20 wks with my 3rd little girl and I get angry so fast at my husband at my kids everything irritates me. My husband hasn't spoken to me in days even after I apologized for acting like a bitch. I have felt so sad and depressed during this pregnancy and I hate it. I don't know what to do to make it better. My husband's birthday is in a couple weeks and I'm trying to plan a surprise weekend getaway for just the two of us, but I feel like he doesn't want to be around me and I'm having 2nd thoughts on even doing it now. This pregnancy is sucking everything out of me I get worn out faster, out of breath all the time and just completely exhausted. Hoping that I'm not the only with these feelings, but I needed to vent.