Am I pregnant


I'm 35 years old and last month my cycle came on the day it was due it lasted 3 days was very light, I had no cramps and then it ended. Since then I have been moody my back and boobs have been so sore. I have been nauseated and had bad back aches to name a few symptoms.

My cycle was supposed to come on 3 days ago and it hasn't but when I took the test it was negative.

Can I still be pregnant?