Early pregnancy symptoms bfn though?

Shanna

So I’m 13 dpo and my period is supposed to start tomorrow but my cervix is still really high! And soft and very closed also I have not dried up yet my breast have had this burning sensation for about 3 days and 2 days before that they were just sore, for about 2 days now I’ve been getting really flushed and I checked my temp earlier and it was 99.3 ?? I took a frer this morning and it was a bfn