I m 49 years old and my tubes are tied. My last period was Dec 30. Jan 14 I had light pink spotting one time when I went to the restroom. Jan 16 I became very dizzy and nauseous. I continue to feel slight dizziness, nauseous, headache, cramping, hunger and slight breast tenderness. I spotted 1 time on Jan 21 and it was red and had brown spotting a few times after that. Could I be pregnant????