Spotting on CD 11 and 12..

My period comes on the 11th of every month and it lasts 7 days.. my dh and I had sex on the 15th on my period and every day since.. my period ended on the 17th but I noticed Pink spotting last night and now it's red.. no clotting or pain.. ita just there when I wipe.. just curious if this is ovulation spotting??