Help with pink discharge?

I had my last cycle Decemeber 3rd, I believe I ovulated on Decemeber 14 could have been the 15 since I had cramps for two days and I had a Positive ovulation test on the 12th! I took 2 pregnancy test last week and both BFN! Yesterday I had a little pinkish discharge when I wiped but nothing else that day and then again today after my husband and I did the baby dance, but again nothing else! I have not taken another pregnancy test in 3 days AF should be here Wednesday!!  Any ideas what it could be? I have had a lot of symptoms of being pregnant but don't want to get my hopes up!!