unusual bleeding CD 15-16

Samantha

so I have had ovulation spotting before and it was little pink spots here and there but never made a mess and only lasted half a day. I got home last night CD 15 and there my shorts were completely ruined And covered in blood like I'd gotten my period. a few hours before I had cramps. today is CD 16 and it is just light spotting. me and my husband are TTC and DTD 7 days ago. could this be an early pregnancy symptom?