Cramps

Hi Everyone,

I'd like to ask. Hubby and I are ttc for about 6 mnths now. This cycle I felt a bit of discomfort/cramping around the ovary area and lower abdomen quite tender as well and a bit bruised saying around 7Dpo to 11 dpo also had like a very light smear of spotting around 9dpo. but maybe because we intercourse that morning. I felt I had all the symptoms but ended up having AF show up at 28th day. What could that be?

Thank you in advance for your help.