3-4 days miss period. 2 negative preg test. sore breast. feel need to use the bathroom, found pink small mass with red dot and blood drops falling... ?

Probably spotting: From your history it is unlikely that you are pregnant. It is not that uncommon to miss a menstrual cycle, but still have the premenstrual symptoms associated with it - breast tenderness, water retention etc are pretty common premenstrual symptoms. Mucous and light spotting would account for your findings. If symptoms don't resolve in a week then see your Dr.