Dear sir/madam, very likely. Folicular ovarian cyst
can be formed each month. Every time you need to have the ovulation your egg cell can be held in ovaries and form this kind of cyst.
After that it can rupture and cause sharp pain
in abdominopelvic region on the side of ovary. So it can be caught(ultrasound) in the middle of the menstrual cycle. If it happens constantly u should do gynaecology work up including hormone levels and CT scan of pelvic region. Also these symptoms can be caused by pelvic infections, abscesses or STDs. Do urine analysis and inflammatory markers
to rule this out. Appendicitis
can come very fast so dont exclude it. Diverticulitis
should be considered too.
Wish you good health. Dr. Ivan Romich