I am 5 days late on my period. Cramping, tired, closed cervix, headaches, craving sweets (I've never liked sweets), and nausea. I'm on a 21 day cycle and I took a pregnancy test on Wednesday negative and another today negative... I am thinking I need to wait until I would technically be 6 Weeks pregnant to go to the doctor, is that a good idea? I'm craving sex which for me is out of the ordinary, I'm feeling a lot more sensitive emotionally.. Growing up I never had an exact period up until about 3 months ago I started having it on the dot every 21 days. I'm really confused/worried/excited and hopeful all at once. Of anyone has suggestions or answers please feel free to express, thanks.