Pink EWCM but negative OPK

Kelsey

So I just got off birth control last month and had sex with my fiancé two evenings ago and today I noticed I had a lot of pink ewcm as well as some light cramping. I went to the store and bought OPK’s and got home and took it and it’s negative, but I also peed not too long before taking the test (maybe 20-30 minutes) so I understand the urine could also have been diluted. If I’m not ovulating, what could be the reason for the pink ewcm and uterine cramping? I had my last period on September 27- October 3rd a few days after stopping my BC so I don’t believe it could be my period again. Has anyone else had something like this happen?