Implantation/spotting

OK ladies I need help I'm currently 9 days from supposing to start my period however I'm not sure if it will. So about 3 weeks ago I had what i thought was a period only lasted 3 days and was very light pink which is not normal. A normal period for me is 5 days heavy for 3 days and light the last two. The last two days my fiance and I startef having sex into my fertile days. Last wed I noticed very light spotting only when I wiped. Can anyone help me and tell me if it sounds like I may be pregnant. Ive been extremely tired my breasts are super sore using the bathroom a lot bad headaches n nausea and now incant stand certain smells. Please help