Yeah the 3rd was negative as well, later on in the day it turned to bright red and got really heavy. I havent had a heavy af in a long time.
I am not really sure what it is, it has not ever happened to me. I do know that sometimes the brown blood will show up when your period is due even when you are pregnant, but dont quote me on this. I know you had a positive test and a negative test, did you take a 3 out of curiosity?
Maybe chemical pregnancy or it may turn into a real af soon?
My cycle before my bfp was 37 days long. I tested and they were always negative. When af started it was the same way, brown and mucousy. After like 4 days, it turned to bright red for 2 days. I never got it as its not a typical cycle. It has crossed my mind that i could have had a chemical but no way for me to tell as it could have been a messed up cycle.
You were on a diet recently, that can effect your cycle.