Any help would be appreciated!

​here is my chart, some of the temps might not be as accurate because I didn't get the best sleep before taking it. I am due for my period tomorrow and this morning I took a pregnancy test and got a bfn. I had some light spotting this morning but no cramps, just a little gassy. I feel like smells are stronger but that could be my mind playing tricks on me. I have been trying for so long and this month we used ovulation kits and temperature tracking. I haven't given up hope yet.