I haven't missed my period yet. I should start on the 22nd. I had spotting 13 days before my expected period, sore nipples, very tired, light headed twice, heart burn, emotional, and some cm. I haven't cm for about a week. But today I went to take a shower and I had a little bit of white, thick, CM. And, not to sound nasty, it had a smell. It had the same smell that I always have the day my period stops. Could I be pregnant? And when should I test? Please help.