Myself and my partner are trying to conceive. I am no on day 37 of my cycle with no period. I have been experiencing extreme tiredness and nausea along with cramping and backache. I had spotting on the 26th and 27th February and bled (after intercourse) on the 8th March for about 12 hours. I've now done three home pregnancy tests which are all negative. Has anyone else experienced anything like this before? I'm due to see a nurse this evening but am becoming desperate for answers.