I started notrel two months ago. My doctor said to start it on the first Sunday after my period, so I started it about in the middle of my period and ever since then, (two packs later) I have not gotten my period. I take my pill on time every day and have had unprotected sex one time in the middle of the second pack. Wondering if this is normal for a 18 year old, normal weight girl. Also have had extreme appetite loss, and loss of sex drive as well.