Confused

Hi everyone, I'm 32, TTC for 4 months now, but this month I got really confused and Glow is not working! My cycle is usually 26-28 days, and according to glow, i was supposed to be fertile on the 07th. I took a fertility test on the 5, 7 and 9 and all of them were negative. I also spotted heavily on the 7th day of mt cycle, 2 days after my period stopped. But yesterday and today, my breasts are really sore! If i wasnt fertile when I should be, this cant be pms because i am not supposed to get my period again for about 11 days, what is going on? I am getting anxious and frustraded! (Sorry about my English, I am brazilian...)