I think I'm 9 DPO (though my calender says 11), I felt like ovulation was two days later due to symptoms I felt than when the calender showed. I did three tests, 5, 7 and 9 DPO. All were negative. I'm 3 days from my period due date and getting signs of starting my period. I felt I had implantation bleeding 16 days after my last period and 5 days after the date I feel I ovulated ( bright red blood for 5/6 hours and then light pink next day to a pale yellow same day for a short time). I felt twinging for about 4/5 days after ovulation, had diorreah same day as what I felt was implantation bleeding and felt very emotional for about a week or so. My boobs feel a little bigger but no pain. I've only used the cheap pregnancy tests from ebay. I haven't been on the pill ever and haven't used contraception for 6 years as I used other methods to ensure I don't get pregnant. Could I be pregnant? I feel different but haven't had children before.