Could i be pregnant?

Patient: Im 6 days late on my period and showing some pregnancy symptoms, such as tiredness, nausea ( no vomiting) constipation along with some diarrhea and a lot of vaginal discharge, what should I do? and if I take a test and it comes up negative what could be wrong with me?

Symptoms: Fatigue, vaginal discharge, nausea but not vomiting, constipation, occasional diarrhea.