please help me I'm anxious

I'm on bc and I have been for the past three years. The past few periods I've been spotting before my period like brown and light pinkish. Recently I've had protected sex 5 and 6 days ago. One time the condom seemed kind of baggy (we tried a new kind) but I think the base was fine. I don't thinkThe condom slipped or broke that I am aware of. I started spotting like 6 or 7 days before my period and it was brown and light pink sometimes when I wiped. 5 days before period I wiped and it was bright red. Is this implantation bleeding or a sign that my period is coming? Now I am 3 days before my period and really nervous. I start the different color pills tonight so maybe I will start cramping or soemthing? I haven't seemed to have any period symptoms. Should I take a test?