Am I crazy?

Okay so AF started May 29th and ended on June 1st, as shown I had sex after my period. And couple times during my fertile window. Thursday I was postivley ovulating. My cm since Wednesday has been heavy egg white pretty thick cm. I have been cramping having horrible lower backache, iv been way more tired then usual, also have been frequently urinating, my nipples are sore/sensitive. What's going on?? I slightly cramp when I ovulate, but that's on either side, these cramps are in my pelvic area and lower abdominal. Could I be pregnant? Am I crazy? I just have this gut feeling that I am but can any of you ladies give me any advice? What you think?