I am 44 years old. I had a tubal ligation after my youngest daughter was born 25 years ago. About two months ago I was nauseated for about 2 weeks EVERY night. I was feeling pressure in my right ovary. No pain though. I haven't had a period going on 5 months. My oldest daughter made me take a hpt which came back negative. Does anyone out ther have a clue to what is going on? Thank you.