I had some mild cramps in my ovary area (I think it was ovarys) anyway it followed by this been in my knickers... it's was stretchy but not overly stretchy. The two pictures below are from the first day...

The next day I had dark brown with extremely light pink bits of what I think could be blood

And now it's every now and then I'll wipe and then be a tiny bit of browny/pinky CM...

Does anyone know what this could be?

I'm on CD16,

My period was the 9th - 13th August,

I'm currently on my fertile week and today is my highest fertile day, tomorrow I'm supposed to ovulate (unless I ovulated earlier I didn't check this month)

Ive had unprotected sex 4-5 times this month, two on my fertile week one was last night on my 33% chance. He didn't cum inside me (Tmi)

Any help?