I have been having preganancy like symptoms for around 2

Patient: I have been having preganancy like symptoms for around 2 weeks and was due to get my period on 21/05 however got them today 28/05. I have had nausea and been constantly tired, my period is quite heavy and my back hurts. My husband and I are trying to concieve so I took home pregnancy tests and they have come back negative, is it possible i am pregnant even though i am on a late period? usually my period is 28 days and have never been late,

Symptoms: Nausea, sore back, fatigue, increased appetite

Doctor: