Hi all my cycle is between 24 to 28 days. i had u protected sex with my partner on the 1st 16th 19th 20th january with my partner who ive been wthe forna while and my period was due 10th or 12 febuary i usually add a few days intop just incase. I'm now 8 days late for my period and I've been getting cramping pains and every know and again feeling nausea but no vomating. I've taken 2 test one 3 days into missed period and on this mromign both where negative can anybody help me understand this. Have I taken the test to early? I am over weight but I do have pcos and taking tablets, but I've never had any problems in the last few months Thanks you in advance xx