Had Laproscopy on August 10, 2018. Had my first period close to the end of August, second period in september a few days early, my third expected period showed the presence of browning only when wiping for 3 days(length of normal period days). No full period like usual. I’ve had headaches daily for a week, thick white discharge, and had one day of nausea and vomiting.Took a pregnancy test and it’s negative. Am I showing signs of being pregnant, but possibly hcg levels are to low to show up at this time ?