Up until Nov of last year my af was comming around the 15th-16th of the month, Nov it was 11 days late and didnt start till the 26th, Nov, Dec, Jan & Feb it came the 25th-26th, had af Feb 25th, 26th, 27th, had sex March 9th then the morning of March 13th when I should have been ovulating, my stomach felt heavy which I have never felt before and lightly crampy & af started again for 5 days (3 days light flow (only had to change in morning and at night) then 2 days just when I wiped) I'm waiting to see if it comes again the 25th-26th like is has been or not til the middle of next month like it was before november.