Pregnant??

I was supposed to ovulate January 1-4. One of those days anyways and today is the 10th. I have had soooo much nausea today that is unlike me at all. I'm hardly ever sick. This has been accompanied by cramps and an increased appetite. My emotions have been all over the place and I've cried all the time. This is nothing like me. Could I be pregnant. My S/O and I did the deed December 27, 30 and then throughout my fertile days.... Help please this is my first month TTC baby number 1. I'm so nervous and advice would be appreciated. Thanks!