Hi, I been experiencing nausea, cramping, lower back pain, fatigue and my breast feels heavy. My last LMP was August 12th I ovulated August 24th and the next day I started cramping, the nausea started 2 days after the cramping and as of Friday I had pinching pain, back pain fatigue and heaviness of the breast. I have no children so can please tell me if this is PMS or Pregnancy. Thank you so much