am 38 and already have three children 13, 11 and 7. My partner is 51 and we have been trying for a couple of months for our 4th. I have monitored my temperatures in the morning to ascertain peak fertility time and was pro-active during that time over Christmas so had a high chance of conception. I have always had fairly regular periods of 26 to 28 days cycles. That being the case I was due a period last tuesday through Friday. I did a clearblue pregnancy test Friday morning and it was a faint positive. I have been really tired and experiencing sickness. I did another test this morning to confirm and it was negative. Anyone have any ideas? Still no bleeding or spotting and no let up on the nausea Could the first test have been wrong?