Today I am 15 days late. I was due on the 3rd. Although a few days. BeforeI was due on I spotted once along with stomach cramping. It stopped after a few drops and then I missed my period. My boobs keep swelling and my limbs are very achey. As of today (15 days late) I still have stomach cramps which are not usual with my PMS. I have come and go period pains but it just never comes and I've never experienced the stomach cramps before. I took a pregnancy test yesterday in the afternoon and it came back negative so I've written that idea off.. should I go to my doctor?