Advice please

Raquel
Hey ladies so I always use protection and the one time I didn't I took a plan b just to be sure! This was 10 days ago, my period should be coming in about four days but this past week I've been cramping, having normal discharge like I usually get before my period, I'm experiencing pms bigtime lol & I have Extremely sore boobs! Am I getting my period or am I pregnant? Also, Do any of you have any advice on what you can do to make sore breasts not be as painful?