Cramping

Just found out 2 days ago I was pregnant! Totally a surprise. This is my second pregnancy and I feel like the side effects are hitting me way harder and earlier than last time! So much nausea- I even threw up on my kitchen floor! And this time around I’m cramping. I’ve read cramping is normal. Anyone have any idea if the uterus kind of knows what its doing or something so it expands more quickly causing the cramps?