I'm 17. I was 6 days late on my period, I only came on for 2 days then day 3 I've got brown discharge. I usually bleed for at least 7 days. I've been getting bad cramping feeling like period pains on the 6 days I was late. On the 2 days of my period I was being sick and in bed with really bad cramping. Over this past month I've put on 7 pounds, my breasts are very tender and I'm tired all the time. Could I be pregnant?