The symptoms you mentioned (feeling sick, sharp stomach pains on the side of the lower stomach) are not specific enough for a definitive diagnosis to be given. It is possible that they might be related to endometriosis.


Endometriosis is a disorder in which tissue similar to the mucosal tissue in the inner lining of the uterus is found outside of the uterus. It can be found on an ovary, in the Fallopian tubes, and even on the peritoneum. This tissue goes through the same menstrual cyclic changes. It also bleeds when the menstrual period starts. Menstrual bleeding irregularities might be found. When the bleeding occurs, pain might be detected in the area where the tissue is situated.


The pain might be associated with ovarian cysts. A ovarian cyst is usually formed after egg release. It usually decreases in size and completely disappears until the onset of the next menstrual cycle. However, in certain cases the cyst might stay large and eventually grow even larger influenced by the hormones in the following menstrual cycles. The cyst puts pressure on the surrounding tissue, thus causing pain.


You might want to visit your gynecologist for a physical examination and an ultrasound scan which might reveal the presence of endometriosis or an ovarian cyst.