Help please

Hi so I went to the bathroom this afternoon and saw when I wiped (sorry tmi) that I had a dark blown ish blood spotting or discharge I'm not sure ... I'm ttc and my periods not du for another 4 days yet I have been having strange things happen to my body also for the past 2 days I have been feeling ill had nuesa felt faint and light headed hot flashes and slight cramps. ..

Can anyone please share some advice on this for me please thank you :)