WHAT DO YOU THINK?!

so I was feeling some nausea.and light cramping throughout the day for the first few days post ovulation. Then I started to feel fine just so tired doing my daily activities (horse /barn work, actual work which I am a nanny so packing lunches, laundry, breaking up arguments, driving to after school activities, then school and take care of my home in between ) which is alot to do everyday but I usually can handle it just fine but here the past feel days have really been taking a toll on me. And today and yesterday I have been super Moody. Is this normal for a pregnancy? Or am I just to stressed out? AF due on 22 but really praying not to see her for awhile!