We have been ttc for just a month. Had sex 5 and 4 days before period. My period came, then on day 4 and 5 of my period we had sex. My period usually lasts 3-5 days max and now I'm going on day 10. the past 3-4 days I've had light spotting, changing in color from dark brown to reddish to light brown. I'm experiencing some cramping and lots of fatigue, super irritable and getting nausea spells. I took a test yesterday that came out negative and have a doc appt tomm to rule out a possibility of a cyst...anyone have any thoughts? I'm usually pretty regular and have never had this amount of time go still bleeding.