Crazy hormones

A little over five weeks along- this will be my fourth pregnancy- but I only have one living child who turned one last month. I have been having THE WORST mood swings the past couple weeks which we chalked up to hormones after we found out we were expecting. I don’t remember being so so sooooo grouchy with any other pregnancies- someone suggested it may be due to being pregnant “so soon” after my son. I’m just wondering if anyone else has experienced or is experiencing something similar? I feel so bad for my poor son who often catches the brunt of my horrible attitude. I feel like I am always either scolding him or crying because I am just so flustered. Hoping this passes soon..