Thanks for posting on your query,
The two conditions that you are worried about are totally normal. Dominant follicles or graafian follicles are simply the ones that "pop-up" to cause ovulation. Roughly a week before the midpoint of the menstrual cycle the dominant follicle develops in one of the two ovaries. This grows faster than the other tertiary follicles and prepares itself for ovulation. It reaches a diameter of up to 25 mm and is also known then as the graafian follicle. The Pouch of Douglas, medically known as the recto-uterine pouch
is a cavity between the anus and the uterine wall, and occurs only in women. It is the deepest part of the peritoneal cavity
and is directly related to a woman's sexual satisfaction. It can often contain a certain amount of fluid. In most cases this is perfectly normal.
As for the simple cyst
you had it is no cause for alarm and will be off a couple of weeks after it develops.
Do not be worried and continue having a happy life.
Hope this helps