Hello, my period is not due for another week and I woke up this morning and had some light blood spotting when I went to the bathroom. It was a dark red/brownish color. Also I woke up in the middle of the night last night sweating profusely. I am 23, work out regularly, have no current illnesses, take no medication, am 5'5' 123 lbs. I had unprotected sex (pull out, bad I know) 5 days ago. Is it too soon to be experiencing any signs or should I be concerned?