We've been ttc for 6 months now and so far my period shows up every 30 days, right on schedule. I usually spot at the beginning and end so it lasts in total 8 days (heavy bleeding 2-3 days in the middle). I also get really bad back ache instead of stomach cramps around the time it starts heavy bleeding. Is this normal? I just want to know if it's me that has something abnormal or if we just haven't had our time yet. I live in the North and the Dr. Won't see us until we've been ttc for a full year.