TMI with pic!

Okay so I'm on CD 15 with my fertile window beginning on Wednesday the 30th and ending Feb 5th. My highest peak day in on the 3rd. My cycle length is 39 days and I usually have a +OPK around CD 20-24. I got a neg OPK this morning but I do notice it's darker than the previous days. DH and I BD last night and used preseed but I just felt super wet and went to the bathroom to find what's in the pic. Is this EWCM or from the BD and preseed of last night still? Sorry for the gross pic...​