Confused...

Hey ladies.... years ago my husband and I were ttc. I pretty much gave up bc it had become frustrating. During that my cycles were from 30-42 days. Now, the last 2years they have been 26 days to 32days. My Period was due three days ago (Tuesday). Last sat/sun .... I spotted off and on it was pink and then brown. That was it. So, i am not sure whats going on. I did take a pregnancy test b4 bed and it was negative. Ive been cramping since Saturday off n on. Also, the last two days ive had frequent urination. Sighs... Just ranting....