My cat bit me hard for no reason? 🥺

MsD💋

I just wanna say my cat is the sweetest cat ever. He has never hissed at me or anyone or anything ever. I don’t even think he knows how lol. He loves to cuddle and always wants attention. When I reach down to pet him he stands up so he can reach me better. Today when I was stepping inside my house he was blocking the door so I pushed him gently out of the way and that’s when he went crazy, lunged at me and bit me so hard there’s like a hole in my leg now and bruised around it. He kept trying to do it again and I was stuck there scared as hell 😢 he managed to do it again and also scratch me before someone else got his attention. Anybody know why he did this? It made me so sad like on the verge of crying because he never did this. I feel like my sweet little boy is changing on me and I have no idea why🥺 any advice would be appreciated.