Mini pill


I am on the mini pill and started it on the 22nd by the 29th January I started spotting it last 10 days and was a light brown colouring, I have stop spotting for 5 days now and had sex yesterday this morning I woke up with cramps and light red bleeding, I am now confused whether this was my period or whether the spotting was.... I've took 3 pregnancy test all been negative...... Normal or not?