Irregular/TMI

I have irregular periods. Had the last one on Sept 15th to Sept 18th.(this was the worst cramps ever!) I could barely move. A week or so after that, I thought I was ovulating. Had all the symptoms and egg looking mucus. Did the deed several times. Took a test 2 days ago cause I have not had a period yet. Bfn. Thinking that my period would start on Sept 30th. Well today, October 8th I had a yellow thick type of mucus. Enough to make my undies wet. It lasted about 20 mins and stopped. No sign of blood. I had nausea last week and heart burn but only at night before I went to bed. Have had really bad headaches and my boobs itch. No sign of period or pregnancy. Any suggestions? The doctors told me to try for a year before I go in.