freaking out!

so I've been following my cycles for awhile now on and off glow. I'm super regular and using fertility awareness method. however, me and my bf got drunk twice during my fertile window and he finished up in there both times. I've got 8 days til my period. and I'm having cramps, mood swings and vomiting along with insomnia and fatigue which are not normal for me! anyone else randomly experience these or could i be pregnant??