I'm 28 years old i usually have a period every 21 days like clock work. I'm over 2 weeks late and I have had sensitive breasts, frequent urination, and fatigue. I'e taken 4 HPT and all have been negative. 2 days ago I started spotting with very mild cramps. Today the cramping andd bleeding has increased. There have been multiple small clots as well. Is this just my period showing up very late or could I be pregnant?