hello my last period was October 16th - 20th which is normal I did not have it in November now I'm 20 days late and I have been having some symptoms like fatigue, indigestion, food cravings/weird eating habits, lower back pain, dizzy spells and nausea, mood swings, easily irritated. I want to set up an apt with my gyno but with negative tests I wasn't sure I should?? please help