sudden sensitive uterus

So Iv been thinking I'm pregnant for the last week. Also my period is 2 days late but it's irregular so I'm not worried. But Iv been feeling symtoms. And if I am pregnant we would be happy. 
•fatigue
•using bathroom more
•hungry more often 
•itchy/sore boobs
•nausea 
•round ligament pain
•ovary pains 
Just now I'm in the car and I feel light cramping feeling and then it just switches to this feeling like around my uterus is sensitive. Idk how else to explain it other than it felt like my uterus tightened up it felt. Has anyone had this and ended up being pregnant??