Blood in CM (sorry if TMI!)

So I am a couple of months into TTC. I am currently on CD13 and noticed late last night (CD12) and early this morning my CM has a pinky/red colour to it. Up until yesterday I had next to no CM and any I did have didn't resemble EWCM. We are DTD every 4 days (with the most recent attempt falling on CD10) and I am also taking SP which I stop on CD12. Does anyone know what this may have been? My cycles are usually between 27-29 days although last months was 32 days (which totally got my hopes up!).

Thanks

Could be a remnant of AF or O bleeding, or more likely a bit of bleeding from DTD which can irritate a sensitive cervix. I wouldn't worry about a tiny bit of pinkness!

That can be very normal around ovulation. Your cervix gets very soft as it's coming up to ovulation, and opens a little bit and this makes it easier to get a little owie. Then the EWCM can dilute it out to make it look more obvious than it normally does.

SP can be a bit of a blood thinner and may make minor wounds bleed a little more than they normally would, so a tiny wound that normally would have healed without ever really bleeding noticeably may bleed a bit more freely and thus be more easy to notice. :)