Pre seed question..

Hi ladies. I used preseed about two days ago and after sex I had spotting. I also spotted yesterday after Bding. I'm not ovulating yet though my period ended on the 10th. Idk if it's just light pink spotting from my period or if it's a preseed symptom. I also have been experiencing light cramps since Bding using preseed. It's not painful and I'm going to keep my eye out for spotting when I use it again. Just curious if anyone else has experienced this?