Hi there I have gone 61 days since the first day of my last period, march 18. I caught my ovulation april 25 and had sex that night once. I have had nausea on and off, lower back pain, cramping and fluters in the lower abdomin, extreme dizziness, we have been actively trying for seven month, but have had negative test after negative test it is now may 18, I m not sure what to think