10 dpo and BFN :(

Hi everyone, I think I'm going crazy lol or my mind is playing me so bad, I've been having so many symptoms that I never experience with my others normal cycles, but today at 11 dpo (I'm not sure if I ovulated 14 days after my period, but counting on that) I have had a pregnancy blood test and it was Negative :( I feel so disappointed, the biggest symptom I have is that pulling pinching sensation inside my uterus, does anybody else have that symptom and had a positive results after 11 dpo?