Any thoughts?

So, I had pinkish spotting 10 days before and 4 days before my period was supposed to start (which never happens). my period started 4 days late which is VERY unusual, I usually start right on time. I had a regular period that lasted about 5 days. but now I've been over my period for about a day and I've been spotting again, feeling nauseous to the point where I'm almost throwing up and cramping a little bit. Anybody had this happen? can I be pregnant even though I've had my period?