Isnt it weird

m
I never spotted a day in my life when it comes to periods but I did spotted 13 pod AF came like 3 days after that it was a day late I take hpt but faint lines went to d.r I guess it was a bfn but why am I having symptoms I refuse to go back to the d.r until I do further investigation I feel like they are no help can anyone help me who has some of the same problems