Help!!

I ovulated sometime around 14/15th. I took a plan b on the 14th. My period is due sometime between tomorrow and the 1st. I have had some clear CM with what looked like pinkish streaks to reddish in color some since Monday. Have also had mild cramping. I even inserted a tampon to get a better look and I’m not sure if this is the start of my period or what? Opinions? I have been stressed to the point that I can barely even eat. Preg tests have been negative, fmu today.

I would also like to add this is the second plan b I’ve taken within a month. I understand I need birth control and I have it now. This was two majorly freakish incidents. BC has been purchased. Taking Sunday if this is truly my period.