For the past couples of days I have noticed lower cramps in what i believe to be my right ovary and…

For the past couples of days I have noticed lower cramps in what i believe to be my right ovary and back. I checked my cervix many times, the first it was low and i believe open then the next day my vaginal walls are super tight and my cervix is closed and out of my reach. Ive been constipated and a lil tired here and there. I dont have much cm it feels dry and is white but two days ago was a lil sticky and slimy. Not to mention my appetite is completely gone, I can go literally all day without eating or drinking. Tested yesterday, it was negative. I was told it was too early and to wait a couple of days. i took another test today and was also negative. Anyone else had these symptoms?