Okay, so I'm in my 2ww...not even sure when I ovulated or anything as I don't usually track these things, but lately I've been feeling crampy/back pain, irritable, headachy, and today I had a time when I wiped where there was a very scant amount of pink on the toilet paper.

My af is due around the 19th or 20th. We DTD on the night of the 27th of February.

Could any of this be a sign? Could the pink on the toilet paper have been implantation? When should I test?