So confused!!

Katie
So my husband and I have been trying to have a baby for about 6 months now. I was on bc for 4 years and i stopped taking back in october. So my periods have been regular for some time now. But in March I was 6 days late and it was a strange period i was light for the first 2 days and the last 3 i would start when I went to work (about 6 or 7 am) and i would be off when i got off work (2pm) AF was due 4/20 it is 11 days late this afternoon i had taken a test and it was bfn. I plan on going to the doctor on pay day but until then does anyone maybe know what's going on?