Hello hopefully someone can help me. Me and my partner have been trying for a baby,my periods are bang on every 35 days never been late.I am now 12 days late.my last period was 3rd may and I was due on on the 6th June.I done a pregnancy test 13th was negative so as I had done it in the day thought might be wrong.so I done another one 14th in morning again negative. I booked doctor appoionment he told me to do another test and also tested me for infections both came back today and no infections but still a negative test result.since last week I have been having lower back pain and abdominal like I do when I'm about to come on but I haven't and I don't really feel like I'm going to either.over the weekend I was feeling bit sick on off throghout the day but mostly at night,today is first day I don't feel as sick,I have not been sick. Been quite tired but nothing major and going to toilet a lot but I'm putting that down to drinking a lot of water.my doc is not being very helpful and I can't understand why there is no period if I'm not pregnant.please please could someone help?? :)