what day in your cycle were you when you had your ultrasound? If it was very early on- then those could be 'antral follicles'. Antral follicles are small follicles (about 2-8 mm in diameter) that we can see - and measure and count - with ultrasound. Antral follicles are also referred to as resting follicles. Antral follicles are a good measurement of how many follicles/eggs you might have mature for that cycle. it is a good 'guessing' point for the doc to see how many you have that cycle early on and that might develop into the cycle and become larger and eventually release an egg. if you have follicles- you have NOT ovulated yet. once you ovulate, (typically anyways, not always), the follicle will release an egg, and then the follicle will 'collapse' and just be reabsorbed into the tissue. sometimes that empty follicle doesn't collapse though and can form a corpus luteum cyst- which means it just doesn't collapse, might contains fluid or blood and might grow and just be a pain. usually these 'cysts' will go away on their own. if you have a large one- they might prescribe birth control pills, lupron or something else to help it shrink. or as a last resort, do a lap to surgically remove it, if they suspect it could be dangerous (or not just corpus luteum cyst, but another type of cyst). If you had PCOS, the doc would be able to know through your bloodwork and u/s.
Usually an ultrasound diagnosis of polycystic ovaries is made if there are at least eight to ten cysts that are less than 10mm in size on each ovary. so you would have had more than just a 'few' follicles- you would have had a lot, so it doesn't sound like PCOS, but only your doc can tell you that. plus your ovary would probably be swollen/larger than normal. so sounds like you had a normal u/s (sounds like no PCOS to me if the doc said you had no cysts, PCOS'rs often have a lot of follicles or cysts) and just have a few 'antral follicles' which means you should ovulate a few eggs this month hopefully- which is all good! sounds like things are going well. just ask lots of questions with your doc- i know it is very confusing. goodl uck