Can anyone answer this question?

Has anyone ever gotten there period and still got a BFP that same cycle? I dont understand what is going on with my body, its acting very weird right now, my temps are still very high, I just checked again a few mins ago and its 98.61 but I still have spotting that is really dark red and my bbs hurt like crazy, could i be miscarring b4 I even find out im actually pg? this has never happened to me b4 and if this is af she is not acting "normal" at all. I am dizzy and i have a headache. anyone ever experience this b4 and still get a BFP? I need some answers.