Hi, I'm 12 days late for my period and never missed one before, I've been feeling quiet sick and ive done 2 pregnancy test (only cheap) which both come back negative. I've woken up this morning gone to the toilet and whipped and there's Brown blood/discharge on the paper and it's only there when I wipe.. Could anybody help?

or know why I may have missed my period... Or

if I'm pregnant why are my test negative.