AITA for sending my wife a very nasty text that said I hope she miscarries? (Update: she's pregnant)

I had the most epic fight with my wife last night. I didn't sleep very much, so it's a pretty long story. I'll try to make it as short as possible, and I'll try to leave out any superfluous details. It'll still be pretty long. I apologize.<br><br>Anyway, I've been married to my wife "Candace" for 4 years now (we've been together for 11 years). She's got a nice big house, a successful career, and a great family. I'm the same. We have a twin boy and girl aged 2. We both have 2 cars each, and we also own a summer house in California. Our marriage is often described as perfect by our friends and family. My MIL has repeatedly told us that we're an inspiration to the modern couple. We've had some fights, but they've always been resolved in a matter of hours.<br><br>My issue is that Candace has never had a job. Ever. She won the birth lottery and is filthy rich. My issue is that I have to work my ass off to pay for everything that I don't "need", which includes a lot of the stuff in our house.<br><br>Things have been escalating for a while now, but it's been since last night that it really started. I was out of town last week for work, and when I came home, I noticed that the dining room had a large painting of Candace, one of the ones that she had done in the summer. I recognised the painting as the very same painting we had in our bedroom, and I instantly felt a little uncomfortable.<br><br>I looked around and saw that there were other paintings missing, and our bedroom was bare. My first thought was to ask her about it, but I had an idea that she was selling them, so I instead looked it up. Sure enough, I found her listing the paintings for thousands of dollars, and it instantly infuriated me. She makes a painting in a few hours, and sells it for thousands? What the fuck. She contributes absolutely nothing, and I still have to work hard to ensure we have what we need.<br><br>I was still fuming when she got home with our children. I asked her what she had done with the paintings, and she told me that she gave them to her friends. She asked me why I was so mad, and I told her that if she's going to sell them, she should at least give me some money. She laughed at me and told me I was being "funny" and "cute". I instantly got angry, and slapped her in the face. It wasn't hard, but she fell to the ground, so I assume she's pregnant. I had never hit her before, but it felt like she just thought I was being a child and I had to punish her for it. I washed my face to calm down, and when I came back all that was on her mind was whether or not she was pregnant. I told her that I didn't care if she was, and that she should just go see a doctor already. In that moment, I truly didn't care. She started screaming at me, telling me that she hated me and that I was a monster. I don't think I've ever seen her that angry.<br><br>Eventually, she just yelled at me and ran to her car with our kids, leaving me alone at home. I texted her telling her to bring the kids back so I could put them to bed, but she didn't reply. I started to get angry again, but then I had the idea to send her a text telling her that I hope she miscarries if she was pregnant. It was a "fuck you" text, and she deserved it. I sent it, and just after, I noticed that she had blocked my number. She usually has a tendency to block people she doesn't like, so I wasn't too surprised.<br><br>It's now 2pm the next day, and I still haven't heard a word from her. It's been over 24 hours. I really don't know what to do. She's not my mother, but I do still love her, and I really don't know what to do.<br><br>Am I the asshole? Was I justified in slapping her? Was I justified in sending her that text?