Jusy curious

Noah
So I had sex on CD 10 and I started spotting bright pink and very little on CD 11. Like a drop of blood In the water and a spot when I wiped. I did a cervix check this afternoon (as I've been doing the past 2 cycles) it was kind of between hard and medium and didn't seem open just curious as to what this could be. I'm pretty sure I haven't ovulated. I'm ttc but not very hard.