hi I'm 25 years old and generally fit and well. I'm not on any medication and have only ever been to the doctor twice through illness.

The first time I went to the doctor was around 18 months ago because my periods which I have suffered with all my life began to become so heavy and debilitating they were affecting my work and social life. I would become faint and have to change every hour. The pain was horrendous and I would be very pale and sweaty. I began throwing up at night and getting feverish. I had enough so I went to the doctor. They did a blood tests for hormones which came back ok and I had a scan which showed a small cyst on my right ovary and a slightly thicker lining of the uterus than would be expected which I was reassured was nothing to worry about so I felt I was wasting their time and just needed to deal with the fact I had abnormally heavy periods.

18 months on and I haven't had a period for four months after they suddenly stopped. My diet hasn't changed and neither has my weight but I don't feel well. I get alot of stomach pain and pelvic pressure as well as persistent bloating. I feel tired constantly, my hair is falling out. I'm not pregnant or more stressed I just don't know what's going on. I went to the doctor again last week and she felt my stomach and said it seemed fine and to go back if I haven't had a period in another two months because apparently until then they aren't too worried as there could be a vast variety of reasons why women don't have them. I know something isn't right but I don't know what I'm supposed to do. Any ideas about what this might be or have similar experiences with this?