Help! Is AF coming?

I started using preseed this cycle. Everyday during my fertile window. Experienced back aches, slight nausea & slight headaches sporadically, mild breast tenderness, 'heaviness' in my abdominal area (really strange feeling), random sharp/quick little pain in my belly button or in close proximity, & excess white lotion like CM. Woke up this AM...& it's all gone. Checked my CP & it's high, seems hard & CM had a tinge of pink to it. AF is due in 2 days & I'm 13 DPO. Anyone else experience this?