Missed period , pregnancy symptoms

I been having nausea and belly aching for over a week now I went to the hospital at 9 dpo the test came out negative 2 days after I started having sharp pains in my sides and back... yesterday oct.31 was the day I was suppose to start my period but I missed it , I have no cramping just the belly aching , sharp pains and nausea is there a possibility I’m pregnant or I’m just late ? Last month I started my period 3 days early I don’t want to test just to be disappointed