I Was Supposed To Get My Period On November 1st.

I was supposed to get my period on November 1st. Didn't get it. Waited a week, took an home pregnancy test. Negative result. Waited another week, took another test. Negative result. Waited another week, negative result. Now I have pinkish color discharge. Feel nauseous, breasts are tender, light cramping. Can I still be pregnant? Help.