thought this was my month

Sydney
So this was my 3rd month ttc and I had a good feeling about it. I was trying to not let it take over my life. I was trying to ignore little symptoms. But for the last week my breast were extremely sore and sensitive. I was emotional and tired, but I thought could be AF coming. AF was due the 5th of July. Started spotting yesterday(2nd of July) and since I use the diva cup I'm able to really look at my menstrual flow. It's gotten a little heavier but not much and it's been really clotty (sorry TMI) I never pass clots anymore not since I was 13/14. Could I have had a chemical and not know it? I was waiting to test until the 5th. Yesterday was 11dpo. Maybe it's normal but I'm a little concerned. Help.